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Python Library Reference

Previous: 6.7 filecmp Up: 6.7 filecmp Next: 6.8 popen2

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6.7.1 The dircmp 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 dircmp class provides the following methods:

report()

Print (to sys.stdout) a comparison between a and b.

report_partial_closure()

Print a comparison between a and b and common immediate subdirctories.

report_full_closure()

Print a comparison between a and b and common subdirctories (recursively).

The 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 __getattr__() hooks, all attributes are computed lazilly, so there is no speed penalty if only those attributes which are lightweight to compute are used.

left_list

Files and subdirectories in a, filtered by hide and ignore.

right_list

Files and subdirectories in b, filtered by hide and ignore.

common

Files and subdirectories in both a and b.

left_only

Files and subdirectories only in a.

right_only

Files and subdirectories only in b.

common_dirs

Subdirectories in both a and b.

common_files

Files in both a and b

common_funny

Names in both a and b, such that the type differs between the directories, or names for which os.stat() reports an error.

same_files

Files which are identical in both a and b.

diff_files

Files which are in both a and b, whose contents differ.

funny_files

Files which are in both a and b, but could not be compared.

subdirs

A dictionary mapping names in common_dirs to dircmp objects.

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Python Library Reference

Previous: 6.7 filecmp Up: 6.7 filecmp Next: 6.8 popen2

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Release 2.2.3, documentation updated on 30 May 2003.