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:mod:`tabnanny` --- Detection of ambiguous indentation
======================================================
.. module:: tabnanny
:synopsis: Tool for detecting white space related problems in Python source files in a
directory tree.
.. moduleauthor:: Tim Peters <tim_one@users.sourceforge.net>
.. sectionauthor:: Peter Funk <pf@artcom-gmbh.de>
.. rudimentary documentation based on module comments
**Source code:** :source:`Lib/tabnanny.py`
--------------
For the time being this module is intended to be called as a script. However it
is possible to import it into an IDE and use the function :func:`check`
described below.
.. note::
The API provided by this module is likely to change in future releases; such
changes may not be backward compatible.
.. function:: check(file_or_dir)
If *file_or_dir* is a directory and not a symbolic link, then recursively
descend the directory tree named by *file_or_dir*, checking all :file:`.py`
files along the way. If *file_or_dir* is an ordinary Python source file, it is
checked for whitespace related problems. The diagnostic messages are written to
standard output using the print statement.
.. data:: verbose
Flag indicating whether to print verbose messages. This is incremented by the
``-v`` option if called as a script.
.. data:: filename_only
Flag indicating whether to print only the filenames of files containing
whitespace related problems. This is set to true by the ``-q`` option if called
as a script.
.. exception:: NannyNag
Raised by :func:`process_tokens` if detecting an ambiguous indent. Captured and
handled in :func:`check`.
.. function:: process_tokens(tokens)
This function is used by :func:`check` to process tokens generated by the
:mod:`tokenize` module.
.. XXX document errprint, format_witnesses, Whitespace, check_equal, indents,
reset_globals
.. seealso::
Module :mod:`tokenize`
Lexical scanner for Python source code.