cpython/Doc/library/rlcompleter.rst

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:mod:`rlcompleter` --- Completion function for GNU readline
===========================================================
.. module:: rlcompleter
:synopsis: Python identifier completion, suitable for the GNU readline library.
.. sectionauthor:: Moshe Zadka <moshez@zadka.site.co.il>
The :mod:`rlcompleter` module defines a completion function suitable for the
:mod:`readline` module by completing valid Python identifiers and keywords.
When this module is imported on a Unix platform with the :mod:`readline` module
available, an instance of the :class:`Completer` class is automatically created
and its :meth:`complete` method is set as the :mod:`readline` completer.
Example::
>>> import rlcompleter
>>> import readline
>>> readline.parse_and_bind("tab: complete")
>>> readline. <TAB PRESSED>
Merged revisions 64475,64544-64545,64550,64557-64558,64565,64570,64577,64582-64583,64585,64590,64592-64593,64625,64630,64638,64647,64655-64656,64663-64664 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r64475 | raymond.hettinger | 2008-06-22 22:29:28 -0500 (Sun, 22 Jun 2008) | 1 line Issue 3161: Missing import and test. ........ r64544 | georg.brandl | 2008-06-26 16:12:55 -0500 (Thu, 26 Jun 2008) | 2 lines Use newer versions of externals. ........ r64545 | benjamin.peterson | 2008-06-26 16:23:30 -0500 (Thu, 26 Jun 2008) | 1 line add a htmlview directive ........ r64550 | brett.cannon | 2008-06-26 19:32:16 -0500 (Thu, 26 Jun 2008) | 2 lines Ignore .pyc and .pyo files. ........ r64557 | mark.dickinson | 2008-06-27 05:11:52 -0500 (Fri, 27 Jun 2008) | 3 lines Remove trailing 'L's from numerator and denominator in the repr() of a Fraction instance. ........ r64558 | mark.dickinson | 2008-06-27 06:03:21 -0500 (Fri, 27 Jun 2008) | 2 lines Add Jean Brouwers for his work on math.sum ........ r64565 | raymond.hettinger | 2008-06-27 16:34:24 -0500 (Fri, 27 Jun 2008) | 1 line Fix whitespace in example code. ........ r64570 | hyeshik.chang | 2008-06-27 20:04:31 -0500 (Fri, 27 Jun 2008) | 8 lines Give information for compililation of _multiprocessing.SemLock on FreeBSD: FreeBSD's P1003.1b semaphore support is highly experimental and it's disabled by default. Even if a user loads the experimental kernel module manually, _multiprocessing doesn't work correctly due to several known incompatibilities around sem_unlink and sem_getvalue, yet. ........ r64577 | raymond.hettinger | 2008-06-28 17:16:53 -0500 (Sat, 28 Jun 2008) | 1 line Issue 3230: Do not the set specific size macro. ........ r64582 | benjamin.peterson | 2008-06-28 18:06:05 -0500 (Sat, 28 Jun 2008) | 2 lines convert test_audioop to unittest. Thanks to Giampaolo Rodola. ........ r64583 | benjamin.peterson | 2008-06-28 18:06:49 -0500 (Sat, 28 Jun 2008) | 1 line rewrap ........ r64585 | benjamin.peterson | 2008-06-28 18:35:31 -0500 (Sat, 28 Jun 2008) | 1 line fix typo ........ r64590 | benjamin.peterson | 2008-06-29 08:43:07 -0500 (Sun, 29 Jun 2008) | 1 line reinstate the ending backtick. thanks Nick :) ........ r64592 | vinay.sajip | 2008-06-29 16:25:28 -0500 (Sun, 29 Jun 2008) | 2 lines Removed out-of-date comment in _install_handlers and used issubclass in place of equality comparison of classes. ........ r64593 | vinay.sajip | 2008-06-29 16:27:15 -0500 (Sun, 29 Jun 2008) | 1 line Updated to reflect change in logging.config to remove out-of-date comment in _install_handlers and the use of issubclass in place of equality comparison of classes. ........ r64625 | georg.brandl | 2008-07-01 14:59:00 -0500 (Tue, 01 Jul 2008) | 2 lines Add a link to PEP 324. ........ r64630 | georg.brandl | 2008-07-01 15:18:10 -0500 (Tue, 01 Jul 2008) | 2 lines #3216: fix Execute's parameter description. ........ r64638 | georg.brandl | 2008-07-01 15:50:02 -0500 (Tue, 01 Jul 2008) | 2 lines #1410739: add a footnote about "is" and "unusual" behavior. ........ r64647 | benjamin.peterson | 2008-07-01 18:33:06 -0500 (Tue, 01 Jul 2008) | 1 line add ABC to the glossary ........ r64655 | mark.dickinson | 2008-07-02 04:37:01 -0500 (Wed, 02 Jul 2008) | 7 lines Replace occurrences of '\d' with '[0-9]' in Decimal regex, to make sure that the behaviour of Decimal doesn't change if/when re.UNICODE becomes assumed in Python 3.0. Also add a check that alternative Unicode digits (e.g. u'\N{FULLWIDTH DIGIT ONE}') are *not* accepted in a numeric string. ........ r64656 | nick.coghlan | 2008-07-02 08:09:19 -0500 (Wed, 02 Jul 2008) | 1 line Issue 3190: pydoc now hides module __package__ attributes ........ r64663 | jesse.noller | 2008-07-02 11:44:09 -0500 (Wed, 02 Jul 2008) | 1 line Reenable the manager tests with Amaury's threading fix ........ r64664 | facundo.batista | 2008-07-02 11:52:55 -0500 (Wed, 02 Jul 2008) | 4 lines Issue #449227: Now with the rlcompleter module, callable objects are added a '(' when completed. ........
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readline.__doc__ readline.get_line_buffer( readline.read_init_file(
readline.__file__ readline.insert_text( readline.set_completer(
readline.__name__ readline.parse_and_bind(
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>>> readline.
The :mod:`rlcompleter` module is designed for use with Python's interactive
mode. A user can add the following lines to his or her initialization file
(identified by the :envvar:`PYTHONSTARTUP` environment variable) to get
automatic :kbd:`Tab` completion::
try:
import readline
except ImportError:
print("Module readline not available.")
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else:
import rlcompleter
readline.parse_and_bind("tab: complete")
On platforms without :mod:`readline`, the :class:`Completer` class defined by
this module can still be used for custom purposes.
.. _completer-objects:
Completer Objects
-----------------
Completer objects have the following method:
.. method:: Completer.complete(text, state)
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Return the *state*\ th completion for *text*.
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If called for *text* that doesn't include a period character (``'.'``), it will
complete from names currently defined in :mod:`__main__`, :mod:`builtins` and
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keywords (as defined by the :mod:`keyword` module).
If called for a dotted name, it will try to evaluate anything without obvious
side-effects (functions will not be evaluated, but it can generate calls to
:meth:`__getattr__`) up to the last part, and find matches for the rest via the
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:func:`dir` function. Any exception raised during the evaluation of the
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expression is caught, silenced and :const:`None` is returned.
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