Remove mentions of 'psyco' from docs and examples

The psyco package has been declared umaintained and dead. It is no
longer receiving bug fixes including for security issues. From
http://psyco.sourceforge.net/

> 12 March 2012
>
> Psyco is unmaintained and dead. Please look at PyPy for the
> state-of-the-art in JIT compilers for Python.

Avoid recommending the use of an unmaintained package (since 2012).
Users can continue to use PyPy for the latest and greatest in Python
JIT.

3 files changed, 5 insertions, 30 deletions

diff --git a/docs/HowToUsePyparsing.rst b/docs/HowToUsePyparsing.rst
index 7d39e30..62dc677 100644
--- a/docs/HowToUsePyparsing.rst
+++ b/docs/HowToUsePyparsing.rst
@@ -226,13 +226,6 @@ Usage notes
   or expressions that may occur within an ``And`` expression; an early element

   of an ``And`` may match, but the overall expression may fail.

 

-- Performance of pyparsing may be slow for complex grammars and/or large

-  input strings.  The psyco_ package can be used to improve the speed of the

-  pyparsing module with no changes to grammar or program logic - observed

-  improvments have been in the 20-50% range.

-

-.. _psyco: http://psyco.sourceforge.net/

-

 

 Classes

 =======

@@ -363,11 +356,8 @@ methods for code to use are:
   performance enhancement, known as "packrat parsing".  packrat parsing is

   disabled by default, since it may conflict with some user programs that use

   parse actions.  To activate the packrat feature, your

-  program must call the class method ParserElement.enablePackrat().  If

-  your program uses psyco to "compile as you go", you must call

-  enablePackrat before calling psyco.full().  If you do not do this,

-  Python will crash.  For best results, call enablePackrat() immediately

-  after importing pyparsing.

+  program must call the class method ParserElement.enablePackrat(). For best

+  results, call enablePackrat() immediately after importing pyparsing.

 

 

 Basic ParserElement subclasses

diff --git a/examples/verilogParse.py b/examples/verilogParse.py
index 9477e38..61c3c30 100644
--- a/examples/verilogParse.py
+++ b/examples/verilogParse.py
@@ -73,10 +73,8 @@ from pyparsing import Literal, Keyword, Word, OneOrMore, ZeroOrMore, \
         StringEnd, FollowedBy, ParserElement, Regex, cppStyleComment

 import pyparsing

 usePackrat = False

-usePsyco = False

 

 packratOn = False

-psycoOn = False

 

 if usePackrat:

     try:

@@ -86,16 +84,6 @@ if usePackrat:
     else:

         packratOn = True

 

-# comment out this section to disable psyco function compilation

-if usePsyco:

-    try:

-        import psyco

-        psyco.full()

-    except:

-        print("failed to import psyco Python optimizer")

-    else:

-        psycoOn = True

-

 

 def dumpTokens(s,l,t):

     import pprint

@@ -637,7 +625,6 @@ else:
         print(" - using pyparsing version", pyparsing.__version__)

         print(" - using Python version", sys.version)

         if packratOn: print(" - using packrat parsing")

-        if psycoOn: print(" - using psyco runtime optimization")

         print()

 

         import os

diff --git a/pyparsing.py b/pyparsing.py
index aa1b993..945c51d 100644
--- a/pyparsing.py
+++ b/pyparsing.py
@@ -1677,11 +1677,9 @@ class ParserElement(object):
            This speedup may break existing programs that use parse actions that
            have side-effects.  For this reason, packrat parsing is disabled when
            you first import pyparsing.  To activate the packrat feature, your
-           program must call the class method :class:`ParserElement.enablePackrat`.  If
-           your program uses ``psyco`` to "compile as you go", you must call
-           ``enablePackrat`` before calling ``psyco.full()``.  If you do not do this,
-           Python will crash.  For best results, call ``enablePackrat()`` immediately
-           after importing pyparsing.
+           program must call the class method :class:`ParserElement.enablePackrat`.
+           For best results, call ``enablePackrat()`` immediately after
+           importing pyparsing.
 
            Example::