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-===============
- List Commands
-===============
-
-One of the most common patterns with command line programs is the need
-to print lists of data. cliff provides a base class for commands of
-this type so that they only need to prepare the data, and the user can
-choose from one of several output formatter plugins to see the list of
-data in their preferred format.
-
-Lister
-======
-
-The :class:`cliff.lister.Lister` base class API extends
-:class:`Command` to allow :func:`take_action` to return data to be
-formatted using a user-selectable formatter. Subclasses should provide
-a :func:`take_action` implementation that returns a two member tuple
-containing a tuple with the names of the columns in the dataset and an
-iterable that will yield the data to be output. See the description of
-:ref:`the files command in the demoapp <demoapp-list>` for details.
-
-List Output Formatters
-======================
-
-cliff is delivered with two output formatters for list
-commands. :class:`Lister` adds a command line switch to let the user
-specify the formatter they want, so you don't have to do any extra
-work in your application.
-
-csv
----
-
-The ``csv`` formatter produces a comma-separated-values document as
-output. CSV data can be imported into a database or spreadsheet for
-further manipulation.
-
-::
-
- (.venv)$ cliffdemo files -f csv
- "Name","Size"
- "build",136
- "cliffdemo.log",2690
- "Makefile",5569
- "source",408
-
-table
------
-
-The ``table`` formatter uses PrettyTable_ to produce output formatted
-for human consumption.
-
-.. _PrettyTable: http://code.google.com/p/prettytable/
-
-::
-
- (.venv)$ cliffdemo files
- +---------------+------+
- | Name | Size |
- +---------------+------+
- | build | 136 |
- | cliffdemo.log | 2546 |
- | Makefile | 5569 |
- | source | 408 |
- +---------------+------+
-
-Other Formatters
-----------------
-
-Formatters using tablib_ to produce JSON, YAML, and HTML are available
-as part of `cliff-tablib`_.
-
-.. _cliff-tablib: https://github.com/dreamhost/cliff-tablib
-
-Creating Your Own Formatter
----------------------------
-
-If the standard formatters do not meet your needs, you can bundle
-another formatter with your program by subclassing from
-:class:`cliff.formatters.base.ListFormatter` and registering the
-plugin in the ``cliff.formatter.list`` namespace.
-
-
-.. _tablib: https://github.com/kennethreitz/tablib