Fix to the doc

author: Michele Simionato <michele.simionato@gmail.com> 2010-08-31 08:04:29 +0200
committer: Michele Simionato <michele.simionato@gmail.com> 2010-08-31 08:04:29 +0200
commit: 3df27dd0d7b5dd75a7c14b7c316975d96a3eec99 (patch)
tree: 1a5282cb61cb69b5f75b45a0fc51680ba1d2931b
parent: c9f13261dac2014054167212be7d674ac2c2e231 (diff)
download: micheles-3df27dd0d7b5dd75a7c14b7c316975d96a3eec99.tar.gz
3 files changed, 1733 insertions, 3811 deletions
diff --git a/plac/doc/plac.html b/plac/doc/plac.html
index 88271c1..240ba5e 100644
--- a/plac/doc/plac.html
+++ b/plac/doc/plac.html
@@ -415,7 +415,7 @@ h1 tt, h2 tt, h3 tt, h4 tt, h5 tt, h6 tt {
 
 
 <div class="section" id="plac-parsing-the-command-line-the-easy-way">
-<h1><a class="toc-backref" href="#id53">Plac: Parsing the Command Line the Easy Way</a></h1>
+<h1><a class="toc-backref" href="#id17">Plac: Parsing the Command Line the Easy Way</a></h1>
 <table class="docutils field-list" frame="void" rules="none">
 <col class="field-name" />
 <col class="field-body" />
@@ -441,49 +441,49 @@ h1 tt, h2 tt, h3 tt, h4 tt, h5 tt, h6 tt {
 <div class="contents topic" id="contents">
 <p class="topic-title first">Contents</p>
 <ul class="simple">
-<li><a class="reference internal" href="#plac-parsing-the-command-line-the-easy-way" id="id18">Plac: Parsing the Command Line the Easy Way</a><ul>
-<li><a class="reference internal" href="#the-importance-of-scaling-down" id="id19">The importance of scaling down</a></li>
-<li><a class="reference internal" href="#scripts-with-required-arguments" id="id20">Scripts with required arguments</a></li>
-<li><a class="reference internal" href="#scripts-with-default-arguments" id="id21">Scripts with default arguments</a></li>
-<li><a class="reference internal" href="#scripts-with-options-and-smart-options" id="id22">Scripts with options (and smart options)</a></li>
-<li><a class="reference internal" href="#scripts-with-flags" id="id23">Scripts with flags</a></li>
-<li><a class="reference internal" href="#plac-for-python-2-x-users" id="id24">plac for Python 2.X users</a></li>
-<li><a class="reference internal" href="#more-features" id="id25">More features</a></li>
-<li><a class="reference internal" href="#a-realistic-example" id="id26">A realistic example</a></li>
-<li><a class="reference internal" href="#keyword-arguments" id="id27">Keyword arguments</a></li>
-<li><a class="reference internal" href="#final-example-a-shelve-interface" id="id28">Final example: a shelve interface</a></li>
-<li><a class="reference internal" href="#plac-vs-argparse" id="id29">plac vs argparse</a></li>
-<li><a class="reference internal" href="#plac-vs-the-rest-of-the-world" id="id30">plac vs the rest of the world</a></li>
-<li><a class="reference internal" href="#the-future" id="id31">The future</a></li>
-<li><a class="reference internal" href="#trivia-the-story-behind-the-name" id="id32">Trivia: the story behind the name</a></li>
+<li><a class="reference internal" href="#plac-parsing-the-command-line-the-easy-way" id="id17">Plac: Parsing the Command Line the Easy Way</a><ul>
+<li><a class="reference internal" href="#the-importance-of-scaling-down" id="id18">The importance of scaling down</a></li>
+<li><a class="reference internal" href="#scripts-with-required-arguments" id="id19">Scripts with required arguments</a></li>
+<li><a class="reference internal" href="#scripts-with-default-arguments" id="id20">Scripts with default arguments</a></li>
+<li><a class="reference internal" href="#scripts-with-options-and-smart-options" id="id21">Scripts with options (and smart options)</a></li>
+<li><a class="reference internal" href="#scripts-with-flags" id="id22">Scripts with flags</a></li>
+<li><a class="reference internal" href="#plac-for-python-2-x-users" id="id23">plac for Python 2.X users</a></li>
+<li><a class="reference internal" href="#more-features" id="id24">More features</a></li>
+<li><a class="reference internal" href="#a-realistic-example" id="id25">A realistic example</a></li>
+<li><a class="reference internal" href="#keyword-arguments" id="id26">Keyword arguments</a></li>
+<li><a class="reference internal" href="#final-example-a-shelve-interface" id="id27">Final example: a shelve interface</a></li>
+<li><a class="reference internal" href="#plac-vs-argparse" id="id28">plac vs argparse</a></li>
+<li><a class="reference internal" href="#plac-vs-the-rest-of-the-world" id="id29">plac vs the rest of the world</a></li>
+<li><a class="reference internal" href="#the-future" id="id30">The future</a></li>
+<li><a class="reference internal" href="#trivia-the-story-behind-the-name" id="id31">Trivia: the story behind the name</a></li>
 </ul>
 </li>
-<li><a class="reference internal" href="#advanced-usages-of-plac" id="id33">Advanced usages of plac</a><ul>
-<li><a class="reference internal" href="#introduction" id="id34">Introduction</a></li>
-<li><a class="reference internal" href="#from-scripts-to-interactive-applications" id="id35">From scripts to interactive applications</a></li>
-<li><a class="reference internal" href="#testing-a-plac-application" id="id36">Testing a plac application</a></li>
-<li><a class="reference internal" href="#plac-easy-tests" id="id37">Plac easy tests</a></li>
-<li><a class="reference internal" href="#plac-batch-scripts" id="id38">Plac batch scripts</a></li>
-<li><a class="reference internal" href="#implementing-subcommands" id="id39">Implementing subcommands</a></li>
-<li><a class="reference internal" href="#plac-interpreter-call" id="id40">plac.Interpreter.call</a></li>
-<li><a class="reference internal" href="#readline-support" id="id41">Readline support</a></li>
-<li><a class="reference internal" href="#the-plac-runner" id="id42">The plac runner</a></li>
-<li><a class="reference internal" href="#a-non-class-based-example" id="id43">A non class-based example</a></li>
-<li><a class="reference internal" href="#writing-your-own-plac-runner" id="id44">Writing your own plac runner</a></li>
-<li><a class="reference internal" href="#long-running-commands" id="id45">Long running commands</a></li>
-<li><a class="reference internal" href="#threaded-commands" id="id46">Threaded commands</a></li>
-<li><a class="reference internal" href="#running-commands-as-external-processes" id="id47">Running commands as external processes</a></li>
-<li><a class="reference internal" href="#managing-the-output-of-concurrent-commands" id="id48">Managing the output of concurrent commands</a></li>
-<li><a class="reference internal" href="#parallel-computing-with-plac" id="id49">Parallel computing with plac</a></li>
-<li><a class="reference internal" href="#the-plac-server" id="id50">The plac server</a></li>
-<li><a class="reference internal" href="#summary" id="id51">Summary</a></li>
-<li><a class="reference internal" href="#appendix-custom-annotation-objects" id="id52">Appendix: custom annotation objects</a></li>
+<li><a class="reference internal" href="#advanced-usages-of-plac" id="id32">Advanced usages of plac</a><ul>
+<li><a class="reference internal" href="#introduction" id="id33">Introduction</a></li>
+<li><a class="reference internal" href="#from-scripts-to-interactive-applications" id="id34">From scripts to interactive applications</a></li>
+<li><a class="reference internal" href="#testing-a-plac-application" id="id35">Testing a plac application</a></li>
+<li><a class="reference internal" href="#plac-easy-tests" id="id36">Plac easy tests</a></li>
+<li><a class="reference internal" href="#plac-batch-scripts" id="id37">Plac batch scripts</a></li>
+<li><a class="reference internal" href="#implementing-subcommands" id="id38">Implementing subcommands</a></li>
+<li><a class="reference internal" href="#plac-interpreter-call" id="id39">plac.Interpreter.call</a></li>
+<li><a class="reference internal" href="#readline-support" id="id40">Readline support</a></li>
+<li><a class="reference internal" href="#the-plac-runner" id="id41">The plac runner</a></li>
+<li><a class="reference internal" href="#a-non-class-based-example" id="id42">A non class-based example</a></li>
+<li><a class="reference internal" href="#writing-your-own-plac-runner" id="id43">Writing your own plac runner</a></li>
+<li><a class="reference internal" href="#long-running-commands" id="id44">Long running commands</a></li>
+<li><a class="reference internal" href="#threaded-commands" id="id45">Threaded commands</a></li>
+<li><a class="reference internal" href="#running-commands-as-external-processes" id="id46">Running commands as external processes</a></li>
+<li><a class="reference internal" href="#managing-the-output-of-concurrent-commands" id="id47">Managing the output of concurrent commands</a></li>
+<li><a class="reference internal" href="#parallel-computing-with-plac" id="id48">Parallel computing with plac</a></li>
+<li><a class="reference internal" href="#the-plac-server" id="id49">The plac server</a></li>
+<li><a class="reference internal" href="#summary" id="id50">Summary</a></li>
+<li><a class="reference internal" href="#appendix-custom-annotation-objects" id="id51">Appendix: custom annotation objects</a></li>
 </ul>
 </li>
 </ul>
 </div>
 <div class="section" id="the-importance-of-scaling-down">
-<h2><a class="toc-backref" href="#id54">The importance of scaling down</a></h2>
+<h2><a class="toc-backref" href="#id18">The importance of scaling down</a></h2>
 <p>There is no want of command line arguments parsers in the Python
 world. The standard library alone contains three different modules:
 <a class="reference external" href="http://docs.python.org/library/getopt.html">getopt</a> (from the stone age),
@@ -524,7 +524,7 @@ is designed to be simple to use and extremely concise, as the examples
 below will show.</p>
 </div>
 <div class="section" id="scripts-with-required-arguments">
-<h2><a class="toc-backref" href="#id55">Scripts with required arguments</a></h2>
+<h2><a class="toc-backref" href="#id19">Scripts with required arguments</a></h2>
 <p>Let me start with the simplest possible thing: a script that takes a
 single argument and does something to it.  It cannot get simpler
 than that, unless you consider a script without command-line
@@ -618,7 +618,7 @@ optional arguments:
 This is only the tip of the iceberg: <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> is able to do much more than that.</p>
 </div>
 <div class="section" id="scripts-with-default-arguments">
-<h2><a class="toc-backref" href="#id56">Scripts with default arguments</a></h2>
+<h2><a class="toc-backref" href="#id20">Scripts with default arguments</a></h2>
 <p>The need to have suitable defaults for command-line scripts is quite
 common. For instance I have encountered this use case at work hundreds
 of times:</p>
@@ -743,7 +743,7 @@ optional arguments:
 I will show in the next paragraphs.</p>
 </div>
 <div class="section" id="scripts-with-options-and-smart-options">
-<h2><a class="toc-backref" href="#id57">Scripts with options (and smart options)</a></h2>
+<h2><a class="toc-backref" href="#id21">Scripts with options (and smart options)</a></h2>
 <p>It is surprising how few command-line scripts with options I have
 written over the years (probably less than a hundred), compared to the
 number of scripts with positional arguments I wrote (certainly more
@@ -867,7 +867,7 @@ executing 'select * from table' on dsn
 </pre>
 </div>
 <div class="section" id="scripts-with-flags">
-<h2><a class="toc-backref" href="#id58">Scripts with flags</a></h2>
+<h2><a class="toc-backref" href="#id22">Scripts with flags</a></h2>
 <p><a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> is able to recognize flags, i.e. boolean options which are
 <tt class="docutils literal"><span class="pre">True</span></tt> if they are passed to the command line and <tt class="docutils literal"><span class="pre">False</span></tt>
 if they are absent. Here is an example:</p>
@@ -916,7 +916,7 @@ the one-character abbreviation for options, since it does not make sense
 to compose them.</p>
 </div>
 <div class="section" id="plac-for-python-2-x-users">
-<h2><a class="toc-backref" href="#id59">plac for Python 2.X users</a></h2>
+<h2><a class="toc-backref" href="#id23">plac for Python 2.X users</a></h2>
 <p>I do not use Python 3. At work we are just starting to think about
 migrating to Python 2.6. It will take years before we
 think to migrate to Python 3. I am pretty much sure most Pythonistas
@@ -952,7 +952,7 @@ X &gt;= 4 and I will use the <tt class="docutils literal"><span class="pre">plac
 that the core features of <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> run even on Python 2.3.</p>
 </div>
 <div class="section" id="more-features">
-<h2><a class="toc-backref" href="#id60">More features</a></h2>
+<h2><a class="toc-backref" href="#id24">More features</a></h2>
 <p>One of the goals of <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> is to have a learning curve of <em>minutes</em> for
 its core features, compared to the learning curve of <em>hours</em> of
 <a class="reference external" href="http://argparse.googlecode.com">argparse</a>. In order to reach this goal, I have <em>not</em> sacrificed all
@@ -1071,7 +1071,7 @@ line as soon as available, whereas the default behaviour is to print
 all the lines together and the end of the computation.</p>
 </div>
 <div class="section" id="a-realistic-example">
-<h2><a class="toc-backref" href="#id61">A realistic example</a></h2>
+<h2><a class="toc-backref" href="#id25">A realistic example</a></h2>
 <p>Here is a more realistic script using most of the features of <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> to
 run SQL queries on a database by relying on <a class="reference external" href="http://www.sqlalchemy.org/">SQLAlchemy</a>. Notice the usage
 of the <tt class="docutils literal"><span class="pre">type</span></tt> feature to automagically convert a SQLAlchemy connection
@@ -1135,7 +1135,7 @@ optional arguments:
 <p>You can check for yourself that the script works.</p>
 </div>
 <div class="section" id="keyword-arguments">
-<h2><a class="toc-backref" href="#id62">Keyword arguments</a></h2>
+<h2><a class="toc-backref" href="#id26">Keyword arguments</a></h2>
 <p>Starting from release 0.4, <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> supports keyword arguments.  In
 practice that means that if your main function has keyword arguments,
 <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> treats specially arguments of the form <tt class="docutils literal"><span class="pre">&quot;name=value&quot;</span></tt> in the
@@ -1195,7 +1195,7 @@ is a consequence of the way the argument names are managed in function calls
 by the Python language.</p>
 </div>
 <div class="section" id="final-example-a-shelve-interface">
-<h2><a class="toc-backref" href="#id63">Final example: a shelve interface</a></h2>
+<h2><a class="toc-backref" href="#id27">Final example: a shelve interface</a></h2>
 <p>Here is a less trivial example for the keyword arguments feature.
 The use case is the following: suppose we have stored the
 configuration parameters of a given application into a Python shelve
@@ -1317,7 +1317,7 @@ ishelve.py: error: unrecognized arguments: .cler
 </pre>
 </div>
 <div class="section" id="plac-vs-argparse">
-<h2><a class="toc-backref" href="#id64">plac vs argparse</a></h2>
+<h2><a class="toc-backref" href="#id28">plac vs argparse</a></h2>
 <p><a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> is opinionated and by design it does not try to make available
 all of the features of <a class="reference external" href="http://argparse.googlecode.com">argparse</a> in an easy way.  In particular you
 should be aware of the following limitations/differences (the
@@ -1415,7 +1415,7 @@ adding such options to the <tt class="docutils literal"><span class="pre">main</
 attribute.</p>
 </div>
 <div class="section" id="plac-vs-the-rest-of-the-world">
-<h2><a class="toc-backref" href="#id65">plac vs the rest of the world</a></h2>
+<h2><a class="toc-backref" href="#id29">plac vs the rest of the world</a></h2>
 <p>Originally <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> boasted about being &quot;the easiest command-line
 arguments parser in the world&quot;. Since then, people started pointing
 out to me various projects which are based on the same idea
@@ -1438,7 +1438,7 @@ Catherine Devlin. However, this is completely coincidental, since I became
 aware of the <a class="reference external" href="http://packages.python.org/cmd2/">cmd2</a> module only after writing <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a>.</p>
 </div>
 <div class="section" id="the-future">
-<h2><a class="toc-backref" href="#id66">The future</a></h2>
+<h2><a class="toc-backref" href="#id30">The future</a></h2>
 <p>Currently the core of <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> is around 200 lines of code, not counting blanks,
 comments and docstrings. I do not plan to extend the core much in the
 future. The idea is to keep the module short: it is and it should
@@ -1459,7 +1459,7 @@ they require Python 2.5 to work, whereas <tt class="docutils literal"><span clas
 Python 2.3.</p>
 </div>
 <div class="section" id="trivia-the-story-behind-the-name">
-<h2><a class="toc-backref" href="#id67">Trivia: the story behind the name</a></h2>
+<h2><a class="toc-backref" href="#id31">Trivia: the story behind the name</a></h2>
 <p>The <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> project started very humbly: I just wanted to make
 easy_installable my old <a class="reference external" href="http://code.activestate.com/recipes/278844-parsing-the-command-line/">optionparse</a> recipe, and to publish it on PyPI.
 The original name of <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> was optionparser and the idea behind it was
@@ -1488,58 +1488,9 @@ will steal it from me!</p>
 </div>
 </div>
 <div class="section" id="advanced-usages-of-plac">
-<h1><a class="toc-backref" href="#id68">Advanced usages of plac</a></h1>
-<p><em>The present document discusses a few of the advanced use
-cases for plac. It shows how to write interactive and non-interactive
-interpreters with plac, and how to use plac for testing and scripting a generic
-application. It assumes you have already read an understood the
-basic documentation.</em></p>
-<div class="contents topic" id="id1">
-<p class="topic-title first">Contents</p>
-<ul class="simple">
-<li><a class="reference internal" href="#plac-parsing-the-command-line-the-easy-way" id="id53">Plac: Parsing the Command Line the Easy Way</a><ul>
-<li><a class="reference internal" href="#the-importance-of-scaling-down" id="id54">The importance of scaling down</a></li>
-<li><a class="reference internal" href="#scripts-with-required-arguments" id="id55">Scripts with required arguments</a></li>
-<li><a class="reference internal" href="#scripts-with-default-arguments" id="id56">Scripts with default arguments</a></li>
-<li><a class="reference internal" href="#scripts-with-options-and-smart-options" id="id57">Scripts with options (and smart options)</a></li>
-<li><a class="reference internal" href="#scripts-with-flags" id="id58">Scripts with flags</a></li>
-<li><a class="reference internal" href="#plac-for-python-2-x-users" id="id59">plac for Python 2.X users</a></li>
-<li><a class="reference internal" href="#more-features" id="id60">More features</a></li>
-<li><a class="reference internal" href="#a-realistic-example" id="id61">A realistic example</a></li>
-<li><a class="reference internal" href="#keyword-arguments" id="id62">Keyword arguments</a></li>
-<li><a class="reference internal" href="#final-example-a-shelve-interface" id="id63">Final example: a shelve interface</a></li>
-<li><a class="reference internal" href="#plac-vs-argparse" id="id64">plac vs argparse</a></li>
-<li><a class="reference internal" href="#plac-vs-the-rest-of-the-world" id="id65">plac vs the rest of the world</a></li>
-<li><a class="reference internal" href="#the-future" id="id66">The future</a></li>
-<li><a class="reference internal" href="#trivia-the-story-behind-the-name" id="id67">Trivia: the story behind the name</a></li>
-</ul>
-</li>
-<li><a class="reference internal" href="#advanced-usages-of-plac" id="id68">Advanced usages of plac</a><ul>
-<li><a class="reference internal" href="#introduction" id="id69">Introduction</a></li>
-<li><a class="reference internal" href="#from-scripts-to-interactive-applications" id="id70">From scripts to interactive applications</a></li>
-<li><a class="reference internal" href="#testing-a-plac-application" id="id71">Testing a plac application</a></li>
-<li><a class="reference internal" href="#plac-easy-tests" id="id72">Plac easy tests</a></li>
-<li><a class="reference internal" href="#plac-batch-scripts" id="id73">Plac batch scripts</a></li>
-<li><a class="reference internal" href="#implementing-subcommands" id="id74">Implementing subcommands</a></li>
-<li><a class="reference internal" href="#plac-interpreter-call" id="id75">plac.Interpreter.call</a></li>
-<li><a class="reference internal" href="#readline-support" id="id76">Readline support</a></li>
-<li><a class="reference internal" href="#the-plac-runner" id="id77">The plac runner</a></li>
-<li><a class="reference internal" href="#a-non-class-based-example" id="id78">A non class-based example</a></li>
-<li><a class="reference internal" href="#writing-your-own-plac-runner" id="id79">Writing your own plac runner</a></li>
-<li><a class="reference internal" href="#long-running-commands" id="id80">Long running commands</a></li>
-<li><a class="reference internal" href="#threaded-commands" id="id81">Threaded commands</a></li>
-<li><a class="reference internal" href="#running-commands-as-external-processes" id="id82">Running commands as external processes</a></li>
-<li><a class="reference internal" href="#managing-the-output-of-concurrent-commands" id="id83">Managing the output of concurrent commands</a></li>
-<li><a class="reference internal" href="#parallel-computing-with-plac" id="id84">Parallel computing with plac</a></li>
-<li><a class="reference internal" href="#the-plac-server" id="id85">The plac server</a></li>
-<li><a class="reference internal" href="#summary" id="id86">Summary</a></li>
-<li><a class="reference internal" href="#appendix-custom-annotation-objects" id="id87">Appendix: custom annotation objects</a></li>
-</ul>
-</li>
-</ul>
-</div>
+<h1><a class="toc-backref" href="#id32">Advanced usages of plac</a></h1>
 <div class="section" id="introduction">
-<h2><a class="toc-backref" href="#id69">Introduction</a></h2>
+<h2><a class="toc-backref" href="#id33">Introduction</a></h2>
 <p>One of the design goals of <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> is to make it dead easy to write a
 scriptable and testable interface for an application.  You can use
 <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> whenever you have an API with strings in input and strings in
@@ -1562,7 +1513,7 @@ or a Web application on top of <a class="reference external" href="http://pypi.p
 you can do with <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a>, your imagination is the only limit!</p>
 </div>
 <div class="section" id="from-scripts-to-interactive-applications">
-<h2><a class="toc-backref" href="#id70">From scripts to interactive applications</a></h2>
+<h2><a class="toc-backref" href="#id34">From scripts to interactive applications</a></h2>
 <p>Command-line scripts have many advantages, but they are no substitute
 for interactive applications.
 In particular, if you have a script with a large startup time which must be run
@@ -1666,7 +1617,7 @@ are using a recent version of Python (&gt;= 2.5), because it is a context
 manager object which uses extended generators internally.</p>
 </div>
 <div class="section" id="testing-a-plac-application">
-<h2><a class="toc-backref" href="#id71">Testing a plac application</a></h2>
+<h2><a class="toc-backref" href="#id35">Testing a plac application</a></h2>
 <p>You can conveniently test your application in interactive mode.
 However manual testing is a poor substitute for automatic testing.</p>
 <p>In principle, one could write automatic tests for the
@@ -1731,7 +1682,7 @@ once at the beginning and at the end of the interpreter loop.
 <tt class="docutils literal"><span class="pre">plac.call</span></tt> instead ignores the initialization/finalization code.</p>
 </div>
 <div class="section" id="plac-easy-tests">
-<h2><a class="toc-backref" href="#id72">Plac easy tests</a></h2>
+<h2><a class="toc-backref" href="#id36">Plac easy tests</a></h2>
 <p>Writing your tests in terms of <tt class="docutils literal"><span class="pre">Interpreter.check</span></tt> is certainly an
 improvement over writing them in terms of <tt class="docutils literal"><span class="pre">plac.call</span></tt>, but they
 are still too low-level for my taste. The <tt class="docutils literal"><span class="pre">Interpreter</span></tt> class provides
@@ -1824,7 +1775,7 @@ a string containing directory names separated by colons). If the variable
 If the plac tool is not found, an <tt class="docutils literal"><span class="pre">ImportError</span></tt> is raised.</p>
 </div>
 <div class="section" id="plac-batch-scripts">
-<h2><a class="toc-backref" href="#id73">Plac batch scripts</a></h2>
+<h2><a class="toc-backref" href="#id37">Plac batch scripts</a></h2>
 <p>It is pretty easy to realize that an interactive interpreter can
 also be used to run batch scripts: instead of reading the commands from
 the console, it is enough to read the commands from a file.
@@ -1876,7 +1827,7 @@ the output of the batch script and turn it into a <tt class="docutils literal"><
 (cool, isn't it?).</p>
 </div>
 <div class="section" id="implementing-subcommands">
-<h2><a class="toc-backref" href="#id74">Implementing subcommands</a></h2>
+<h2><a class="toc-backref" href="#id38">Implementing subcommands</a></h2>
 <p>When I discussed the <tt class="docutils literal"><span class="pre">ishelve</span></tt> implementation in the <a class="reference external" href="http://micheles.googlecode.com/hg/plac/doc/plac.html">basic
 documentation</a>, I said that it looked like a poor man implementation
 of an object system as a chain of elifs; I also said that <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> was
@@ -2005,7 +1956,7 @@ i&gt;
 you pass the <tt class="docutils literal"><span class="pre">verbose</span></tt> flag to the <tt class="docutils literal"><span class="pre">Interpreter.interact</span></tt> method.</p>
 </div>
 <div class="section" id="plac-interpreter-call">
-<h2><a class="toc-backref" href="#id75">plac.Interpreter.call</a></h2>
+<h2><a class="toc-backref" href="#id39">plac.Interpreter.call</a></h2>
 <p>At the core of <tt class="docutils literal"><span class="pre">plac</span></tt> there is the <tt class="docutils literal"><span class="pre">call</span></tt> function which invokes
 a callable with the list of the arguments passed at the command-line
 (<tt class="docutils literal"><span class="pre">sys.argv[1:]</span></tt>). Thanks to <tt class="docutils literal"><span class="pre">plac.call</span></tt> you can launch your module
@@ -2096,7 +2047,7 @@ a comment, the splitting function, the input source and the prompt to
 use while in interactive mode, and a verbose flag.</p>
 </div>
 <div class="section" id="readline-support">
-<h2><a class="toc-backref" href="#id76">Readline support</a></h2>
+<h2><a class="toc-backref" href="#id40">Readline support</a></h2>
 <p>Starting from release 0.6 <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> offers full readline support. That
 means that if your Python was compiled with readline support you get
 autocompletion and persistent command history for free.  By default
@@ -2208,7 +2159,7 @@ NameError: Ambiguous command 'sh': matching ['showall', 'show']
 </pre>
 </div>
 <div class="section" id="the-plac-runner">
-<h2><a class="toc-backref" href="#id77">The plac runner</a></h2>
+<h2><a class="toc-backref" href="#id41">The plac runner</a></h2>
 <p>The distribution of <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> includes a runner script named <tt class="docutils literal"><span class="pre">plac_runner.py</span></tt>,
 which will be installed in a suitable directory in your system by <a class="reference external" href="http://docs.python.org/distutils/">distutils</a>
 (say in <tt class="docutils literal"><span class="pre">\usr\local\bin\plac_runner.py</span></tt> in a Unix-like operative system).
@@ -2318,7 +2269,7 @@ a=1
 on the <tt class="docutils literal"><span class="pre">main</span></tt> object of the Python module.</p>
 </div>
 <div class="section" id="a-non-class-based-example">
-<h2><a class="toc-backref" href="#id78">A non class-based example</a></h2>
+<h2><a class="toc-backref" href="#id42">A non class-based example</a></h2>
 <p><a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> does not force you to use classes to define command containers.
 Even a simple function can be a valid command container, it is
 enough to add to it a <tt class="docutils literal"><span class="pre">.commands</span></tt> attribute and possibly
@@ -2431,7 +2382,7 @@ a method container. In other situations, it is best to use a custom
 class.</p>
 </div>
 <div class="section" id="writing-your-own-plac-runner">
-<h2><a class="toc-backref" href="#id79">Writing your own plac runner</a></h2>
+<h2><a class="toc-backref" href="#id43">Writing your own plac runner</a></h2>
 <p>The runner included in the <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> distribution is intentionally kept
 small (around 50 lines of code) so that you can study it and write
 your own runner if want to. If you need to go to such level
@@ -2508,7 +2459,7 @@ loop in a separate process and send commands to it via the Queue
 class provided by the <a class="reference external" href="http://docs.python.org/library/multiprocessing.html">multiprocessing</a> module.</p>
 </div>
 <div class="section" id="long-running-commands">
-<h2><a class="toc-backref" href="#id80">Long running commands</a></h2>
+<h2><a class="toc-backref" href="#id44">Long running commands</a></h2>
 <p>As we saw, by default a <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> interpreter blocks until
 the command terminates. This is an issue, in the sense that it makes
 the interactive experience quite painful for long running commands. An
@@ -2557,7 +2508,7 @@ the interface responsive. <a class="reference external" href="http://pypi.python
 and processes.</p>
 </div>
 <div class="section" id="threaded-commands">
-<h2><a class="toc-backref" href="#id81">Threaded commands</a></h2>
+<h2><a class="toc-backref" href="#id45">Threaded commands</a></h2>
 <p>The most familiar way to execute a task in the background (even if not
 necessarily the best way) is to run it into a separated thread. In our
 example it is sufficient to replace the line</p>
@@ -2657,7 +2608,7 @@ if __name__ == '__main__':
 </pre>
 </div>
 <div class="section" id="running-commands-as-external-processes">
-<h2><a class="toc-backref" href="#id82">Running commands as external processes</a></h2>
+<h2><a class="toc-backref" href="#id46">Running commands as external processes</a></h2>
 <p>Threads are not loved much in the Python world and actually most people
 prefer to use processes instead. For this reason <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> provides the
 option to execute long running commands as external processes. Unfortunately
@@ -2700,7 +2651,7 @@ and it is safer than using threads, so it is the recommended approach
 unless you are working on Windows.</p>
 </div>
 <div class="section" id="managing-the-output-of-concurrent-commands">
-<h2><a class="toc-backref" href="#id83">Managing the output of concurrent commands</a></h2>
+<h2><a class="toc-backref" href="#id47">Managing the output of concurrent commands</a></h2>
 <p><a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> acts as a command-line task launcher and can be used as the base
 to build a GUI-based task launcher and task monitor. To this aim the
 interpreter class provides a <tt class="docutils literal"><span class="pre">.submit</span></tt> method which returns a task
@@ -2752,7 +2703,7 @@ if __name__ == '__main__':
 </pre>
 </div>
 <div class="section" id="parallel-computing-with-plac">
-<h2><a class="toc-backref" href="#id84">Parallel computing with plac</a></h2>
+<h2><a class="toc-backref" href="#id48">Parallel computing with plac</a></h2>
 <p><a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> is certainly not intended as a tool for parallel computing, but
 still you can use it to launch a set of commands and to collect the
 results, similarly to the MapReduce pattern recently popularized by
@@ -2884,7 +2835,7 @@ sum(task.result for task in plac.runp(calc_pi(N) for i in range(ncpus)))/ncpus
 </pre>
 </div>
 <div class="section" id="the-plac-server">
-<h2><a class="toc-backref" href="#id85">The plac server</a></h2>
+<h2><a class="toc-backref" href="#id49">The plac server</a></h2>
 <p>A command-line oriented interface can be easily converted into a
 socket-based interface. Starting from release 0.7 plac features
 a builtin server which is able to accept commands from multiple
@@ -2930,7 +2881,7 @@ Connection closed by foreign host.
 </pre>
 </div>
 <div class="section" id="summary">
-<h2><a class="toc-backref" href="#id86">Summary</a></h2>
+<h2><a class="toc-backref" href="#id50">Summary</a></h2>
 <p>Once <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> claimed to be the easiest command-line arguments parser
 in the world. Having read this document you may think that it is not
 so easy after all. But it is a false impression. Actually the
@@ -2956,7 +2907,7 @@ given port number (default 2199)</li>
 </div>
 <hr class="docutils" />
 <div class="section" id="appendix-custom-annotation-objects">
-<h2><a class="toc-backref" href="#id87">Appendix: custom annotation objects</a></h2>
+<h2><a class="toc-backref" href="#id51">Appendix: custom annotation objects</a></h2>
 <p>Internally <a class="reference external" href="http://pypi.python.org/pypi/plac">plac</a> uses an <tt class="docutils literal"><span class="pre">Annotation</span></tt> class to convert the tuples
 in the function signature into annotation objects, i.e. objects with
 six attributes <tt class="docutils literal"><span class="pre">help,</span> <span class="pre">kind,</span> <span class="pre">short,</span> <span class="pre">type,</span> <span class="pre">choices,</span> <span class="pre">metavar</span></tt>.</p>
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+BT 1 0 0 1 0 28.82 Tm 1.422651 Tw 12 TL /F1 10 Tf 0 0 0 rg (There is a second advantage of interpreters: if the main function contains some initialization code and) Tj T* 0 Tw .454651 Tw (finalization code \() Tj /F3 10 Tf (__enter__ ) Tj /F1 10 Tf (and ) Tj /F3 10 Tf (__exit__ ) Tj /F1 10 Tf (functions\) they will be run only once at the beginning and) Tj T* 0 Tw (at the end of the interpreter loop. ) Tj /F3 10 Tf (plac.call ) Tj /F1 10 Tf (instead ignores the initialization/finalization code.) Tj T* ET
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-BT 1 0 0 1 0 64.82 Tm .414431 Tw 12 TL /F1 10 Tf 0 0 0 rg (The support for doctests in ) Tj 0 0 .501961 rg (plac ) Tj 0 0 0 rg (comes nearly for free, thanks to the ) Tj 0 0 .501961 rg (shlex ) Tj 0 0 0 rg (module in the standard library,) Tj T* 0 Tw .352765 Tw (which is able to parse simple languages as the ones you can implement with ) Tj 0 0 .501961 rg (plac) Tj 0 0 0 rg (. In particular, thanks to) Tj T* 0 Tw .875984 Tw 0 0 .501961 rg (shlex) Tj 0 0 0 rg (, ) Tj 0 0 .501961 rg (plac ) Tj 0 0 0 rg (is able to recognize comments \(the default comment character is ) Tj /F3 10 Tf (#) Tj /F1 10 Tf (\), escape sequences and) Tj T* 0 Tw 1.50686 Tw (more. Look at the ) Tj 0 0 .501961 rg (shlex ) Tj 0 0 0 rg (documentation if you need to customize how the language is interpreted. For) Tj T* 0 Tw 2.794985 Tw (more flexibility, it is even possible to pass to the interpreter a custom split function with signature) Tj T* 0 Tw /F3 10 Tf (split\(line, commentchar\)) Tj /F1 10 Tf (.) Tj T* ET
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+BT 1 0 0 1 0 437.71 Tm /F3 10 Tf 12 TL (    @plac.annotations\() Tj T* (        configfile=\('path name of the shelve', 'option'\)\)) Tj T* (    def __init__\(self, configfile\):) Tj T* (        self.configfile = configfile or '~/conf.shelve') Tj T* (        self.fname = os.path.expanduser\(self.configfile\)) Tj T* (        self.__doc__ += '\\nOperating on %s.\\n.help to see '\\) Tj T* (            'the available commands.\\n'  % self.fname) Tj T* (    def __enter__\(self\):) Tj T* (        self.sh = shelve.open\(self.fname\)) Tj T* (        return self) Tj T* (    def __exit__\(self, etype, exc, tb\):) Tj T* (        self.sh.close\(\)) Tj T* (    def set\(self, name, value\):) Tj T* (        "set name value") Tj T* (        yield 'setting %s=%s' % \(name, value\)) Tj T* (        self.sh[name] = value) Tj T* (    def show\(self, *names\):) Tj T* (        "show given parameters") Tj T* (        for name in names:) Tj T* (            yield '%s = %s' % \(name, self.sh[name]\) # no error checking) Tj T* (    def showall\(self\):) Tj T* (        "show all parameters") Tj T* (        for name in self.sh:) Tj T* (            yield '%s = %s' % \(name, self.sh[name]\)) Tj T* (    def delete\(self, name=None\):) Tj T* (        "delete given parameter \(or everything\)") Tj T* (        if name is None:) Tj T* (            yield 'deleting everything') Tj T* (            self.sh.clear\(\)) Tj T* (        else:) Tj T* (            yield 'deleting %s' % name) Tj T* (            del self.sh[name] # no error checking) Tj T*  T* (main = ShelveInterface # useful for the tests) Tj T*  T* (if __name__ == '__main__':) Tj T* (    plac.Interpreter\(plac.call\(ShelveInterface\)\).interact\(\)) Tj T* ET
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-BT 1 0 0 1 0 341.71 Tm 12 TL /F3 10 Tf 0 0 0 rg (delete  set  show  showall) Tj T*  T* (i) Tj (>) Tj ( delete) Tj T* (deleting everything) Tj T* (i) Tj (>) Tj ( set a pippo) Tj T* (setting a=pippo) Tj T* (i) Tj (>) Tj ( set b lippo) Tj T* (setting b=lippo) Tj T* (i) Tj (>) Tj ( showall) Tj T* (b = lippo) Tj T* (a = pippo) Tj T* (i) Tj (>) Tj ( show a b) Tj T* (a = pippo) Tj T* (b = lippo) Tj T* (i) Tj (>) Tj ( del a) Tj T* (deleting a) Tj T* (i) Tj (>) Tj ( showall) Tj T* (b = lippo) Tj T* (i) Tj (>) Tj ( delete a) Tj T* (deleting a) Tj T* (KeyError: 'a') Tj T* (i) Tj (>) Tj ( .last_tb) Tj T* ( File "/usr/local/lib/python2.6/dist-packages/plac-0.6.0-py2.6.egg/plac_ext.py", line 190, in _wrap) Tj T* (    for value in genobj:) Tj T* (  File "./ishelve2.py", line 37, in delete) Tj T* (    del self.sh[name] # no error checking) Tj T* (  File "/usr/lib/python2.6/shelve.py", line 136, in __delitem__) Tj T* (    del self.dict[key]) Tj T* (i) Tj (>) Tj T* ET
+BT 1 0 0 1 0 485.71 Tm 12 TL /F3 10 Tf 0 0 0 rg ($ python ishelve2.py) Tj T* (A minimal interface over a shelve object.) Tj T* (Operating on /home/micheles/conf.shelve.) Tj T* (.help to see the available commands.) Tj T* (i) Tj (>) Tj ( .help) Tj T*  T* (special commands) Tj T* (================) Tj T* (.help .last_tb) Tj T*  T* (custom commands) Tj T* (===============) Tj T* (delete  set  show  showall) Tj T*  T* (i) Tj (>) Tj ( delete) Tj T* (deleting everything) Tj T* (i) Tj (>) Tj ( set a pippo) Tj T* (setting a=pippo) Tj T* (i) Tj (>) Tj ( set b lippo) Tj T* (setting b=lippo) Tj T* (i) Tj (>) Tj ( showall) Tj T* (b = lippo) Tj T* (a = pippo) Tj T* (i) Tj (>) Tj ( show a b) Tj T* (a = pippo) Tj T* (b = lippo) Tj T* (i) Tj (>) Tj ( del a) Tj T* (deleting a) Tj T* (i) Tj (>) Tj ( showall) Tj T* (b = lippo) Tj T* (i) Tj (>) Tj ( delete a) Tj T* (deleting a) Tj T* (KeyError: 'a') Tj T* (i) Tj (>) Tj ( .last_tb) Tj T* ( File "/usr/local/lib/python2.6/dist-packages/plac-0.6.0-py2.6.egg/plac_ext.py", line 190, in _wrap) Tj T* (    for value in genobj:) Tj T* (  File "./ishelve2.py", line 37, in delete) Tj T* (    del self.sh[name] # no error checking) Tj T* (  File "/usr/lib/python2.6/shelve.py", line 136, in __delitem__) Tj T* (    del self.dict[key]) Tj T* (i) Tj (>) Tj T* ET
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 BT 1 0 0 1 0 28.82 Tm 1.066303 Tw 12 TL /F1 10 Tf 0 0 0 rg (At the core of ) Tj /F3 10 Tf (plac ) Tj /F1 10 Tf (there is the ) Tj /F3 10 Tf (call ) Tj /F1 10 Tf (function which invokes a callable with the list of the arguments) Tj T* 0 Tw .937674 Tw (passed at the command-line \() Tj /F3 10 Tf (sys.argv[1:]) Tj /F1 10 Tf (\). Thanks to ) Tj /F3 10 Tf (plac.call ) Tj /F1 10 Tf (you can launch your module by) Tj T* 0 Tw (simply adding the lines:) Tj T* ET
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@@ -11589,13 +9691,13 @@ Q
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 BT 1 0 0 1 0 40.82 Tm .50436 Tw 12 TL /F1 10 Tf 0 0 0 rg (Everything works fine if ) Tj /F3 10 Tf (main ) Tj /F1 10 Tf (is a simple callable performing some action; however, in many cases, one) Tj T* 0 Tw .087633 Tw (has a ) Tj /F3 10 Tf (main ) Tj /F1 10 Tf ("function" which is a actually a factory returning a command container object. For instance, in) Tj T* 0 Tw .573318 Tw (my second shelve example the main function is the class ) Tj /F3 10 Tf (ShelveInterface) Tj /F1 10 Tf (, and the two lines needed) Tj T* 0 Tw (to run the module are a bit ugly:) Tj T* ET
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@@ -11616,30 +9718,36 @@ Q
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-BT 1 0 0 1 0 88.82 Tm .435227 Tw 12 TL /F1 10 Tf 0 0 0 rg (Moreover, now the program runs, but only in interactive mode, i.e. it is not possible to run it as a script. It) Tj T* 0 Tw .721098 Tw (would be nice instead to be able to specify the command to execute on the command-line and have the) Tj T* 0 Tw 4.08229 Tw (interpreter start, execute the command and finish properly \(I mean by calling ) Tj /F3 10 Tf (__enter__ ) Tj /F1 10 Tf (and) Tj T* 0 Tw .427633 Tw /F3 10 Tf (__exit__) Tj /F1 10 Tf (\) without needing user input. The the script could be called from a batch shell script working in) Tj T* 0 Tw 2.26816 Tw (the background. In order to provide such functionality ) Tj /F3 10 Tf (plac.Interpreter ) Tj /F1 10 Tf (provides a classmethod) Tj T* 0 Tw 1.173318 Tw (named ) Tj /F3 10 Tf (.call ) Tj /F1 10 Tf (which takes the factory, instantiates it with the arguments read from the command line,) Tj T* 0 Tw 1.517045 Tw (wraps the resulting container object as an interpreter and runs it with the rest arguments found in the) Tj T* 0 Tw (command line. Here is the code to turn the ) Tj /F3 10 Tf (ShelveInterface ) Tj /F1 10 Tf (into a script) Tj T* ET
+BT 1 0 0 1 0 16.82 Tm .435227 Tw 12 TL /F1 10 Tf 0 0 0 rg (Moreover, now the program runs, but only in interactive mode, i.e. it is not possible to run it as a script. It ) Tj T* 0 Tw .721098 Tw (would be nice instead to be able to specify the command to execute on the command-line and have the) Tj T* 0 Tw ET
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 1 0 0 1 0 0 cm BT /F1 12 Tf 14.4 TL ET
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+q
+BT 1 0 0 1 0 64.82 Tm 4.08229 Tw 12 TL /F1 10 Tf 0 0 0 rg (interpreter start, execute the command and finish properly \(I mean by calling ) Tj /F3 10 Tf (__enter__ ) Tj /F1 10 Tf (and) Tj T* 0 Tw .427633 Tw /F3 10 Tf (__exit__) Tj /F1 10 Tf (\) without needing user input. The the script could be called from a batch shell script working in) Tj T* 0 Tw 2.26816 Tw (the background. In order to provide such functionality ) Tj /F3 10 Tf (plac.Interpreter ) Tj /F1 10 Tf (provides a classmethod) Tj T* 0 Tw 1.173318 Tw (named ) Tj /F3 10 Tf (.call ) Tj /F1 10 Tf (which takes the factory, instantiates it with the arguments read from the command line,) Tj T* 0 Tw 1.517045 Tw (wraps the resulting container object as an interpreter and runs it with the rest arguments found in the) Tj T* 0 Tw (command line. Here is the code to turn the ) Tj /F3 10 Tf (ShelveInterface ) Tj /F1 10 Tf (into a script) Tj T* ET
+Q
+Q
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@@ -11660,14 +9768,14 @@ Q
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+1 0 0 1 62.69291 591.8236 cm
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 BT 1 0 0 1 0 4.82 Tm /F1 10 Tf 12 TL (and here are a few examples of usage:) Tj T* ET
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+1 0 0 1 62.69291 378.6236 cm
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@@ -11688,13 +9796,13 @@ Q
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 BT 1 0 0 1 0 16.82 Tm .079989 Tw 12 TL /F1 10 Tf 0 0 0 rg (If you pass the ) Tj /F3 10 Tf (-i ) Tj /F1 10 Tf (flag in the command line, then the script will enter in interactive mode and ask the user) Tj T* 0 Tw (for the commands to execute:) Tj T* ET
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@@ -11714,19 +9822,19 @@ Q
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 BT 1 0 0 1 0 28.82 Tm .221417 Tw 12 TL /F1 10 Tf 0 0 0 rg (In a sense, I have closed the circle: at the beginning of this document I discussed how to turn a script into) Tj T* 0 Tw .784147 Tw (an interactive application \(the ) Tj /F3 10 Tf (shelve_interpreter.py ) Tj /F1 10 Tf (example\), whereas here I have show how to) Tj T* 0 Tw (turn an interactive application into a script.) Tj T* ET
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+1 0 0 1 62.69291 191.4236 cm
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 BT 1 0 0 1 0 4.82 Tm 12 TL /F1 10 Tf 0 0 0 rg (The complete signature of ) Tj /F3 10 Tf (plac.Interpreter.call ) Tj /F1 10 Tf (is the following:) Tj T* ET
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@@ -11746,42 +9854,48 @@ Q
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-BT 1 0 0 1 0 64.82 Tm 1.756651 Tw 12 TL /F1 10 Tf 0 0 0 rg (The factory must have a fixed number of positional arguments \(no default arguments, no varargs, no) Tj T* 0 Tw 1.87881 Tw (kwargs\), otherwise a ) Tj /F3 10 Tf (TypeError ) Tj /F1 10 Tf (is raised: the reason is that we want to be able to distinguish the) Tj T* 0 Tw .829984 Tw (command-line arguments needed to instantiate the factory from the rest arguments that must be sent to) Tj T* 0 Tw 2.609984 Tw (the corresponding interpreter object. It is also possible to specify a list of arguments different from) Tj T* 0 Tw .513318 Tw /F3 10 Tf (sys.argv[1:] ) Tj /F1 10 Tf (\(useful in tests\), the character to be recognized as a comment, the splitting function, the) Tj T* 0 Tw (input source and the prompt to use while in interactive mode, and a verbose flag.) Tj T* ET
+BT 1 0 0 1 0 28.82 Tm 1.756651 Tw 12 TL /F1 10 Tf 0 0 0 rg (The factory must have a fixed number of positional arguments \(no default arguments, no varargs, no ) Tj T* 0 Tw 1.87881 Tw (kwargs\), otherwise a ) Tj /F3 10 Tf (TypeError ) Tj /F1 10 Tf (is raised: the reason is that we want to be able to distinguish the ) Tj T* 0 Tw .829984 Tw (command-line arguments needed to instantiate the factory from the rest arguments that must be sent to) Tj T* 0 Tw ET
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+q
+BT 1 0 0 1 0 28.82 Tm 2.609984 Tw 12 TL /F1 10 Tf 0 0 0 rg (the corresponding interpreter object. It is also possible to specify a list of arguments different from) Tj T* 0 Tw .513318 Tw /F3 10 Tf (sys.argv[1:] ) Tj /F1 10 Tf (\(useful in tests\), the character to be recognized as a comment, the splitting function, the) Tj T* 0 Tw (input source and the prompt to use while in interactive mode, and a verbose flag.) Tj T* ET
+Q
+Q
+q
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+1 0 0 1 62.69291 621.0236 cm
 q
 BT 1 0 0 1 0 64.82 Tm 1.022485 Tw 12 TL /F1 10 Tf 0 0 0 rg (Starting from release 0.6 ) Tj 0 0 .501961 rg (plac ) Tj 0 0 0 rg (offers full readline support. That means that if your Python was compiled) Tj T* 0 Tw 2.120697 Tw (with readline support you get autocompletion and persistent command history for free. By default all) Tj T* 0 Tw .144104 Tw (commands are autocomplete in a case sensitive way. If you want to add new words to the autocompletion) Tj T* 0 Tw .116488 Tw (set, or you want to change the location of the ) Tj /F3 10 Tf (.history ) Tj /F1 10 Tf (file, or to change the case sensitivity, the way to) Tj T* 0 Tw .18436 Tw (go is to pass a ) Tj /F3 10 Tf (plac.ReadlineInput ) Tj /F1 10 Tf (object to the interpreter. Here is an example, assuming you want) Tj T* 0 Tw (to build a database interface understanding SQL commands:) Tj T* ET
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@@ -11801,14 +9915,14 @@ Q
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+1 0 0 1 62.69291 199.0307 cm
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 1 0 0 1 0 0 cm
@@ -11828,7 +9942,7 @@ Q
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-1 0 0 1 62.69291 167.0307 cm
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@@ -11836,34 +9950,40 @@ Q
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-BT 1 0 0 1 0 64.82 Tm 2.010574 Tw 12 TL /F1 10 Tf 0 0 0 rg (If the readline library is not available, my suggestion is to use the ) Tj 0 0 .501961 rg (rlwrap ) Tj 0 0 0 rg (tool which provides similar) Tj T* 0 Tw .22561 Tw (features, at least on Unix-like platforms. ) Tj 0 0 .501961 rg (plac ) Tj 0 0 0 rg (should also work fine on Windows with the ) Tj 0 0 .501961 rg (pyreadline ) Tj 0 0 0 rg (library) Tj T* 0 Tw .389989 Tw (\(I do not use Windows, so this part is very little tested: I tried it only once and it worked, but your mileage) Tj T* 0 Tw 2.206457 Tw (may vary\). For people worried about licenses, I will notice that ) Tj 0 0 .501961 rg (plac ) Tj 0 0 0 rg (uses the readline library only if) Tj T* 0 Tw .591894 Tw (available, it does not include it and it does not rely on it in any fundamental way, so that the ) Tj 0 0 .501961 rg (plac ) Tj 0 0 0 rg (licence) Tj T* 0 Tw (does not need to be the GPL \(actually it is a BSD do-whatever-you-want-with-it licence\).) Tj T* ET
+BT 1 0 0 1 0 16.82 Tm 2.010574 Tw 12 TL /F1 10 Tf 0 0 0 rg (If the readline library is not available, my suggestion is to use the ) Tj 0 0 .501961 rg (rlwrap ) Tj 0 0 0 rg (tool which provides similar ) Tj T* 0 Tw .22561 Tw (features, at least on Unix-like platforms. ) Tj 0 0 .501961 rg (plac ) Tj 0 0 0 rg (should also work fine on Windows with the ) Tj 0 0 .501961 rg (pyreadline ) Tj 0 0 0 rg (library) Tj T* 0 Tw ET
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+BT 1 0 0 1 0 40.82 Tm .389989 Tw 12 TL /F1 10 Tf 0 0 0 rg (\(I do not use Windows, so this part is very little tested: I tried it only once and it worked, but your mileage) Tj T* 0 Tw 2.206457 Tw (may vary\). For people worried about licenses, I will notice that ) Tj 0 0 .501961 rg (plac ) Tj 0 0 0 rg (uses the readline library only if) Tj T* 0 Tw .591894 Tw (available, it does not include it and it does not rely on it in any fundamental way, so that the ) Tj 0 0 .501961 rg (plac ) Tj 0 0 0 rg (licence) Tj T* 0 Tw (does not need to be the GPL \(actually it is a BSD do-whatever-you-want-with-it licence\).) Tj T* ET
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 BT 1 0 0 1 0 28.82 Tm .187882 Tw 12 TL /F1 10 Tf 0 0 0 rg (The interactive mode of ) Tj /F3 10 Tf (plac ) Tj /F1 10 Tf (can be used as a replacement of the ) Tj 0 0 .501961 rg (cmd ) Tj 0 0 0 rg (module in the standard library. It) Tj T* 0 Tw 2.730651 Tw (is actually better than ) Tj 0 0 .501961 rg (cmd) Tj 0 0 0 rg (: for instance, the ) Tj /F3 10 Tf (.help ) Tj /F1 10 Tf (command is more powerful, since it provides) Tj T* 0 Tw (information about the arguments accepted by the given command:) Tj T* ET
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@@ -11883,25 +10003,25 @@ Q
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@@ -11921,63 +10041,42 @@ Q
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-1 0 0 1 62.69291 240.6236 cm
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+1 0 0 1 62.69291 120.6236 cm
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 BT 1 0 0 1 0 16.82 Tm 1.994269 Tw 12 TL /F1 10 Tf 0 0 0 rg (For instance, suppose you want to execute a script containing commands defined in the ) Tj /F3 10 Tf (ishelve2) Tj T* 0 Tw /F1 10 Tf (module like the following one:) Tj T* ET
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-.662745 .662745 .662745 RG
-.5 w
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-Q
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 .662745 .662745 .662745 RG
 .5 w
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-n -6 -6 468.6898 36 re B*
+n -6 -6 468.6898 60 re B*
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-BT 1 0 0 1 0 17.71 Tm /F3 10 Tf 12 TL (del a) Tj T* (del a # intentional error) Tj T* ET
+BT 1 0 0 1 0 41.71 Tm /F3 10 Tf 12 TL (#!ishelve2.py:ShelveInterface -c ~/conf.shelve) Tj T* (set a 1) Tj T* (del a) Tj T* (del a # intentional error) Tj T* ET
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@@ -12025,24 +10124,24 @@ Q
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-1 0 0 1 62.69291 538.6505 cm
+1 0 0 1 62.69291 514.6505 cm
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 0 0 0 rg
 BT 1 0 0 1 0 16.82 Tm /F1 10 Tf 12 TL 2.79186 Tw (The last command intentionally contained an error, to show that the plac runner does not eat the) Tj T* 0 Tw (traceback.) Tj T* ET
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+1 0 0 1 62.69291 484.6505 cm
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 0 0 0 rg
 BT 1 0 0 1 0 16.82 Tm /F1 10 Tf 12 TL .437633 Tw (The runner can also be used to run Python modules in interactive mode and non-interactive mode. If you) Tj T* 0 Tw (put this alias in your bashrc) Tj T* ET
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+1 0 0 1 62.69291 478.6505 cm
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-1 0 0 1 62.69291 490.6505 cm
+1 0 0 1 62.69291 466.6505 cm
 0 0 0 rg
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@@ -12057,16 +10156,16 @@ q
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-1 0 0 1 62.69291 490.6505 cm
+1 0 0 1 62.69291 466.6505 cm
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-1 0 0 1 62.69291 460.6505 cm
+1 0 0 1 62.69291 436.6505 cm
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 BT 1 0 0 1 0 16.82 Tm 2.955318 Tw 12 TL /F1 10 Tf 0 0 0 rg (\(or you define a suitable ) Tj /F3 10 Tf (plac.bat ) Tj /F1 10 Tf (script in Windows\) you can run the ) Tj /F3 10 Tf (ishelve2.py ) Tj /F1 10 Tf (script in) Tj T* 0 Tw (interactive mode as follows:) Tj T* ET
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+1 0 0 1 62.69291 259.4505 cm
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 1 0 0 1 0 0 cm
@@ -12086,13 +10185,13 @@ Q
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-1 0 0 1 62.69291 263.4505 cm
+1 0 0 1 62.69291 239.4505 cm
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+1 0 0 1 62.69291 110.2505 cm
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 1 0 0 1 0 0 cm
@@ -12112,37 +10211,37 @@ Q
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-1 0 0 1 62.69291 102.2505 cm
-q
-BT 1 0 0 1 0 16.82 Tm 2.145697 Tw 12 TL /F1 10 Tf 0 0 0 rg (Notice that the first line specifies a test database ) Tj /F3 10 Tf (~/test.shelve) Tj /F1 10 Tf (, to avoid clobbering your default) Tj T* 0 Tw (shelve. If you mispell the arguments in the first line plac will give you an ) Tj 0 0 .501961 rg (argparse ) Tj 0 0 0 rg (error message \(just try\).) Tj T* ET
-Q
-Q
-q
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-BT 1 0 0 1 0 4.82 Tm /F1 10 Tf 12 TL 235.3849 0 Td (32) Tj T* -235.3849 0 Td ET
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+1 0 0 1 62.69291 741.0236 cm
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+BT 1 0 0 1 0 16.82 Tm 2.145697 Tw 12 TL /F1 10 Tf 0 0 0 rg (Notice that the first line specifies a test database ) Tj /F3 10 Tf (~/test.shelve) Tj /F1 10 Tf (, to avoid clobbering your default) Tj T* 0 Tw (shelve. If you mispell the arguments in the first line plac will give you an ) Tj 0 0 .501961 rg (argparse ) Tj 0 0 0 rg (error message \(just try\).) Tj T* ET
+Q
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@@ -12163,19 +10262,19 @@ Q
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+1 0 0 1 62.69291 603.8236 cm
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 BT 1 0 0 1 0 16.82 Tm .537209 Tw 12 TL /F1 10 Tf 0 0 0 rg (The plac runner does not provide any test discovery facility, but you can use standard Unix tools to help.) Tj T* 0 Tw (For instance, you can run all the ) Tj /F3 10 Tf (.placet ) Tj /F1 10 Tf (files into a directory and its subdirectories as follows:) Tj T* ET
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@@ -12196,23 +10295,23 @@ Q
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+1 0 0 1 62.69291 538.6236 cm
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+1 0 0 1 62.69291 514.6236 cm
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+1 0 0 1 62.69291 502.6236 cm
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@@ -12227,17 +10326,17 @@ q
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+1 0 0 1 62.69291 502.6236 cm
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-1 0 0 1 62.69291 514.6236 cm
+1 0 0 1 62.69291 484.6236 cm
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+1 0 0 1 62.69291 415.4236 cm
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@@ -12258,32 +10357,32 @@ Q
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+1 0 0 1 62.69291 383.4236 cm
 q
 BT 1 0 0 1 0 16.82 Tm .01561 Tw 12 TL /F1 10 Tf 0 0 0 rg (Notice that in non-interactive mode the runner just invokes ) Tj /F3 10 Tf (plac.call ) Tj /F1 10 Tf (on the ) Tj /F3 10 Tf (main ) Tj /F1 10 Tf (object of the Python) Tj T* 0 Tw (module.) Tj T* ET
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+1 0 0 1 62.69291 353.4236 cm
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 BT 1 0 0 1 0 7.23 Tm 18 TL /F2 15 Tf 0 0 0 rg (A non class-based example) Tj T* ET
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+1 0 0 1 62.69291 311.4236 cm
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 BT 1 0 0 1 0 28.82 Tm .907209 Tw 12 TL /F1 10 Tf 0 0 .501961 rg (plac ) Tj 0 0 0 rg (does not force you to use classes to define command containers. Even a simple function can be a) Tj T* 0 Tw 1.796651 Tw (valid command container, it is enough to add to it a ) Tj /F3 10 Tf (.commands ) Tj /F1 10 Tf (attribute and possibly ) Tj /F3 10 Tf (__enter__) Tj T* 0 Tw /F1 10 Tf (and/or ) Tj /F3 10 Tf (__exit__ ) Tj /F1 10 Tf (attributes.) Tj T* ET
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 BT 1 0 0 1 0 16.82 Tm /F1 10 Tf 12 TL .327485 Tw (In particular, a Python module is a perfect container of commands. As an example, consider the following) Tj T* 0 Tw (module implementing a fake Version Control System:) Tj T* ET
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-BT 1 0 0 1 0 185.71 Tm /F3 10 Tf 12 TL ("A Fake Version Control System") Tj T*  T* (import plac) Tj T*  T* (commands = 'checkout', 'commit', 'status') Tj T*  T* (@plac.annotations\(url='url of the source code'\)) Tj T* (def checkout\(url\):) Tj T* (    "A fake checkout command") Tj T* (    return \('checkout ', url\)) Tj T*  T* (@plac.annotations\(message=\('commit message', 'option'\)\)) Tj T* (def commit\(message\):) Tj T* (    "A fake commit command") Tj T* (    return \('commit ', message\)) Tj T*  T* ET
+BT 1 0 0 1 0 161.71 Tm /F3 10 Tf 12 TL ("A Fake Version Control System") Tj T*  T* (import plac) Tj T*  T* (commands = 'checkout', 'commit', 'status') Tj T*  T* (@plac.annotations\(url='url of the source code'\)) Tj T* (def checkout\(url\):) Tj T* (    "A fake checkout command") Tj T* (    return \('checkout ', url\)) Tj T*  T* (@plac.annotations\(message=\('commit message', 'option'\)\)) Tj T* (def commit\(message\):) Tj T* (    "A fake commit command") Tj T* ET
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-BT 1 0 0 1 0 4.82 Tm /F1 10 Tf 12 TL 235.3849 0 Td (33) Tj T* -235.3849 0 Td ET
+BT 1 0 0 1 0 4.82 Tm /F1 10 Tf 12 TL 235.3849 0 Td (31) Tj T* -235.3849 0 Td ET
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+1 0 0 1 62.69291 559.8236 cm
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 .662745 .662745 .662745 RG
 .5 w
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-n -6 -6 468.6898 180 re B*
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-BT 1 0 0 1 0 161.71 Tm /F3 10 Tf 12 TL (@plac.annotations\(quiet=\('summary information', 'flag', 'q'\)\)) Tj T* (def status\(quiet\):) Tj T* (    "A fake status command") Tj T* (    return \('status ', quiet\)) Tj T*  T* (def __missing__\(name\):) Tj T* (    return 'Command %r does not exist' % name) Tj T*  T* (def __exit__\(etype, exc, tb\):) Tj T* (    "Will be called automatically at the end of the call/cmdloop") Tj T* (    if etype in \(None, GeneratorExit\): # success) Tj T* (        print\('ok'\)) Tj T*  T* (main = __import__\(__name__\) # the module imports itself!) Tj T* ET
+BT 1 0 0 1 0 185.71 Tm /F3 10 Tf 12 TL (    return \('commit ', message\)) Tj T*  T* (@plac.annotations\(quiet=\('summary information', 'flag', 'q'\)\)) Tj T* (def status\(quiet\):) Tj T* (    "A fake status command") Tj T* (    return \('status ', quiet\)) Tj T*  T* (def __missing__\(name\):) Tj T* (    return 'Command %r does not exist' % name) Tj T*  T* (def __exit__\(etype, exc, tb\):) Tj T* (    "Will be called automatically at the end of the call/cmdloop") Tj T* (    if etype in \(None, GeneratorExit\): # success) Tj T* (        print\('ok'\)) Tj T*  T* (main = __import__\(__name__\) # the module imports itself!) Tj T* ET
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+1 0 0 1 62.69291 324.6236 cm
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 .662745 .662745 .662745 RG
 .5 w
 .960784 .960784 .862745 rg
-n -6 -6 468.6898 72 re B*
+n -6 -6 468.6898 48 re B*
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-BT 1 0 0 1 0 53.71 Tm /F3 10 Tf 12 TL ($ plac vcs.py check url) Tj T* (checkout) Tj T* (url) Tj T* ($ plac vcs.py st -q) Tj T* (status) Tj T* ET
+BT 1 0 0 1 0 29.71 Tm /F3 10 Tf 12 TL ($ plac vcs.py check url) Tj T* (checkout) Tj T* (url) Tj T* ET
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-BT 1 0 0 1 0 4.82 Tm /F1 10 Tf 12 TL 235.3849 0 Td (34) Tj T* -235.3849 0 Td ET
+BT 1 0 0 1 0 4.82 Tm /F1 10 Tf 12 TL 235.3849 0 Td (32) Tj T* -235.3849 0 Td ET
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-n -6 -6 468.6898 60 re B*
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-BT 1 0 0 1 0 41.71 Tm /F3 10 Tf 12 TL (True) Tj T* ($ plac vcs.py co) Tj T* (commit) Tj T* (None) Tj T* ET
+BT 1 0 0 1 0 65.71 Tm /F3 10 Tf 12 TL ($ plac vcs.py st -q) Tj T* (status) Tj T* (True) Tj T* ($ plac vcs.py co) Tj T* (commit) Tj T* (None) Tj T* ET
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 BT 1 0 0 1 0 4.82 Tm /F1 10 Tf 12 TL (and here is an interactive session:) Tj T* ET
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+1 0 0 1 62.69291 366.6236 cm
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+1 0 0 1 62.69291 312.6236 cm
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 .662745 .662745 .662745 RG
 .5 w
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-n -6 -6 468.6898 84 re B*
+n -6 -6 468.6898 72 re B*
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-BT 1 0 0 1 0 65.71 Tm 12 TL /F3 10 Tf 0 0 0 rg (>) Tj (>) Tj (>) Tj ( import plac) Tj T* (>) Tj (>) Tj (>) Tj ( from ishelve import ishelve) Tj T* (>) Tj (>) Tj (>) Tj ( with plac.Interpreter\(ishelve\) as i:) Tj T* (...     print\(i.send\('.cler'\)\)) Tj T* (...) Tj T* (SystemExit: unrecognized arguments: .cler) Tj T* ET
+BT 1 0 0 1 0 53.71 Tm 12 TL /F3 10 Tf 0 0 0 rg (>) Tj (>) Tj (>) Tj ( import plac) Tj T* (>) Tj (>) Tj (>) Tj ( from ishelve import ishelve) Tj T* (>) Tj (>) Tj (>) Tj ( with plac.Interpreter\(ishelve\) as i:) Tj T* (...     print\(i.send\('.cler'\)\)) Tj T* (...) Tj T* ET
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-BT 1 0 0 1 0 4.82 Tm /F1 10 Tf 12 TL 235.3849 0 Td (35) Tj T* -235.3849 0 Td ET
+BT 1 0 0 1 0 4.82 Tm /F1 10 Tf 12 TL 235.3849 0 Td (33) Tj T* -235.3849 0 Td ET
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-BT 1 0 0 1 0 221.71 Tm /F3 10 Tf 12 TL (class FakeImporter\(object\):) Tj T* (    "A fake importer with an import_file command") Tj T* (    thcommands = ['import_file']) Tj T* (    def __init__\(self, dsn\):) Tj T* (        self.dsn = dsn) Tj T* (    def import_file\(self, fname\):) Tj T* (        "Import a file into the database") Tj T* (        try:) Tj T* (            for n in range\(10000\):) Tj T* (                time.sleep\(.02\)) Tj T* (                if n % 100 == 99: # every two seconds) Tj T* (                    yield 'Imported %d lines' % \(n+1\)) Tj T* (                if n % 10 == 9: # every 0.2 seconds) Tj T* (                    yield # go back and check the TOBEKILLED status) Tj T* (        finally:) Tj T* (            print\('closing the file'\)) Tj T*  T* (if __name__ == '__main__':) Tj T* (    plac.Interpreter.call\(FakeImporter\)) Tj T* ET
+BT 1 0 0 1 0 257.71 Tm /F3 10 Tf 12 TL (import time) Tj T* (import plac) Tj T*  T* (class FakeImporter\(object\):) Tj T* (    "A fake importer with an import_file command") Tj T* (    thcommands = ['import_file']) Tj T* (    def __init__\(self, dsn\):) Tj T* (        self.dsn = dsn) Tj T* (    def import_file\(self, fname\):) Tj T* (        "Import a file into the database") Tj T* (        try:) Tj T* (            for n in range\(10000\):) Tj T* (                time.sleep\(.02\)) Tj T* (                if n % 100 == 99: # every two seconds) Tj T* (                    yield 'Imported %d lines' % \(n+1\)) Tj T* (                if n % 10 == 9: # every 0.2 seconds) Tj T* (                    yield # go back and check the TOBEKILLED status) Tj T* (        finally:) Tj T* (            print\('closing the file'\)) Tj T*  T* (if __name__ == '__main__':) Tj T* (    plac.Interpreter.call\(FakeImporter\)) Tj T* ET
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diff --git a/plac/doc/plac_adv.txt b/plac/doc/plac_adv.txt
index f8480d1..554847e 100644
--- a/plac/doc/plac_adv.txt
+++ b/plac/doc/plac_adv.txt
@@ -1,14 +1,6 @@
 Advanced usages of plac
 =========================================================
 
-*The present document discusses a few of the advanced use
-cases for plac. It shows how to write interactive and non-interactive
-interpreters with plac, and how to use plac for testing and scripting a generic
-application. It assumes you have already read an understood the
-basic documentation.*
-
-.. contents::
-
 Introduction
 -----------------------------------------------------
author	Michele Simionato <michele.simionato@gmail.com>	2010-08-31 08:04:29 +0200
committer	Michele Simionato <michele.simionato@gmail.com>	2010-08-31 08:04:29 +0200
commit	3df27dd0d7b5dd75a7c14b7c316975d96a3eec99 (patch)
tree	1a5282cb61cb69b5f75b45a0fc51680ba1d2931b
parent	c9f13261dac2014054167212be7d674ac2c2e231 (diff)
download	micheles-3df27dd0d7b5dd75a7c14b7c316975d96a3eec99.tar.gz