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+:mod:`filecmp` --- File and Directory Comparisons
+=================================================
+
+.. module:: filecmp
+   :synopsis: Compare files efficiently.
+.. sectionauthor:: Moshe Zadka <moshez@zadka.site.co.il>
+
+
+The :mod:`filecmp` module defines functions to compare files and directories,
+with various optional time/correctness trade-offs.
+
+The :mod:`filecmp` module defines the following functions:
+
+
+.. function:: cmp(f1, f2[, shallow])
+
+   Compare the files named *f1* and *f2*, returning ``True`` if they seem equal,
+   ``False`` otherwise.
+
+   Unless *shallow* is given and is false, files with identical :func:`os.stat`
+   signatures are taken to be equal.
+
+   Files that were compared using this function will not be compared again unless
+   their :func:`os.stat` signature changes.
+
+   Note that no external programs are called from this function, giving it
+   portability and efficiency.
+
+
+.. function:: cmpfiles(dir1, dir2, common[, shallow])
+
+   Returns three lists of file names: *match*, *mismatch*, *errors*.  *match*
+   contains the list of files match in both directories, *mismatch* includes the
+   names of those that don't, and *errros* lists the names of files which could not
+   be compared.  Files may be listed in *errors* because the user may lack
+   permission to read them or many other reasons, but always that the comparison
+   could not be done for some reason.
+
+   The *common* parameter is a list of file names found in both directories. The
+   *shallow* parameter has the same meaning and default value as for
+   :func:`filecmp.cmp`.
+
+Example::
+
+   >>> import filecmp
+   >>> filecmp.cmp('undoc.rst', 'undoc.rst')
+   True
+   >>> filecmp.cmp('undoc.rst', 'index.rst')
+   False
+
+
+.. _dircmp-objects:
+
+The :class:`dircmp` class
+-------------------------
+
+:class:`dircmp` instances are built using this constructor:
+
+
+.. class:: dircmp(a, b[, ignore[, hide]])
+
+   Construct a new directory comparison object, to compare the directories *a* and
+   *b*. *ignore* is a list of names to ignore, and defaults to ``['RCS', 'CVS',
+   'tags']``. *hide* is a list of names to hide, and defaults to ``[os.curdir,
+   os.pardir]``.
+
+The :class:`dircmp` class provides the following methods:
+
+
+.. method:: dircmp.report()
+
+   Print (to ``sys.stdout``) a comparison between *a* and *b*.
+
+
+.. method:: dircmp.report_partial_closure()
+
+   Print a comparison between *a* and *b* and common immediate subdirectories.
+
+
+.. method:: dircmp.report_full_closure()
+
+   Print a comparison between *a* and *b* and common  subdirectories (recursively).
+
+The :class:`dircmp` offers a number of interesting attributes that may be used
+to get various bits of information about the directory trees being compared.
+
+Note that via :meth:`__getattr__` hooks, all attributes are computed lazily, so
+there is no speed penalty if only those attributes which are lightweight to
+compute are used.
+
+
+.. attribute:: dircmp.left_list
+
+   Files and subdirectories in *a*, filtered by *hide* and *ignore*.
+
+
+.. attribute:: dircmp.right_list
+
+   Files and subdirectories in *b*, filtered by *hide* and *ignore*.
+
+
+.. attribute:: dircmp.common
+
+   Files and subdirectories in both *a* and *b*.
+
+
+.. attribute:: dircmp.left_only
+
+   Files and subdirectories only in *a*.
+
+
+.. attribute:: dircmp.right_only
+
+   Files and subdirectories only in *b*.
+
+
+.. attribute:: dircmp.common_dirs
+
+   Subdirectories in both *a* and *b*.
+
+
+.. attribute:: dircmp.common_files
+
+   Files in both *a* and *b*
+
+
+.. attribute:: dircmp.common_funny
+
+   Names in both *a* and *b*, such that the type differs between the directories,
+   or names for which :func:`os.stat` reports an error.
+
+
+.. attribute:: dircmp.same_files
+
+   Files which are identical in both *a* and *b*.
+
+
+.. attribute:: dircmp.diff_files
+
+   Files which are in both *a* and *b*, whose contents differ.
+
+
+.. attribute:: dircmp.funny_files
+
+   Files which are in both *a* and *b*, but could not be compared.
+
+
+.. attribute:: dircmp.subdirs
+
+   A dictionary mapping names in :attr:`common_dirs` to :class:`dircmp` objects.
+