1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
: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. For comparing files,
see also the :mod:`difflib` module.
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:: report()
Print (to ``sys.stdout``) a comparison between *a* and *b*.
.. method:: report_partial_closure()
Print a comparison between *a* and *b* and common immediate
subdirectories.
.. method:: 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:: left_list
Files and subdirectories in *a*, filtered by *hide* and *ignore*.
.. attribute:: right_list
Files and subdirectories in *b*, filtered by *hide* and *ignore*.
.. attribute:: common
Files and subdirectories in both *a* and *b*.
.. attribute:: left_only
Files and subdirectories only in *a*.
.. attribute:: right_only
Files and subdirectories only in *b*.
.. attribute:: common_dirs
Subdirectories in both *a* and *b*.
.. attribute:: common_files
Files in both *a* and *b*
.. attribute:: 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:: same_files
Files which are identical in both *a* and *b*.
.. attribute:: diff_files
Files which are in both *a* and *b*, whose contents differ.
.. attribute:: funny_files
Files which are in both *a* and *b*, but could not be compared.
.. attribute:: subdirs
A dictionary mapping names in :attr:`common_dirs` to :class:`dircmp` objects.
|
