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
|
\section{\module{filecmp} ---
File and Directory Comparisons}
\declaremodule{standard}{filecmp}
\sectionauthor{Moshe Zadka}{moshez@zadka.site.co.il}
\modulesynopsis{Compare files efficiently.}
The \module{filecmp} module defines functions to compare files and directories,
with various optional time/correctness trade-offs.
The \module{filecmp} module defines the following function:
\begin{funcdesc}{cmp}{f1, f2\optional{, shallow\optional{, use_statcache}}}
Compare the files named \var{f1} and \var{f2}, returning \code{1} if
they seem equal, \code{0} otherwise.
Unless \var{shallow} is given and is false, files with identical
\function{os.stat()} signatures are taken to be equal. If
\var{use_statcache} is given and is true,
\function{statcache.stat()} will be called rather then
\function{os.stat()}; the default is to use \function{os.stat()}.
Files that were compared using this function will not be compared again
unless their \function{os.stat()} signature changes. Note that using
\var{use_statcache} true will cause the cache invalidation mechanism to
fail --- the stale stat value will be used from \refmodule{statcache}'s
cache.
Note that no external programs are called from this function, giving it
portability and efficiency.
\end{funcdesc}
\begin{funcdesc}{cmpfiles}{dir1, dir2, common\optional{,
shallow\optional{, use_statcache}}}
Returns three lists of file names: \var{match}, \var{mismatch},
\var{errors}. \var{match} contains the list of files match in both
directories, \var{mismatch} includes the names of those that don't,
and \var{errros} lists the names of files which could not be
compared. Files may be listed in \var{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 \var{shallow} and \var{use_statcache} parameters have the same
meanings and default values as for \function{filecmp.cmp()}.
\end{funcdesc}
Example:
\begin{verbatim}
>>> import filecmp
>>> filecmp.cmp('libundoc.tex', 'libundoc.tex')
1
>>> filecmp.cmp('libundoc.tex', 'lib.tex')
0
\end{verbatim}
\subsection{The \protect\class{dircmp} class \label{dircmp-objects}}
\begin{classdesc}{dircmp}{a, b\optional{, ignore\optional{, hide}}}
Construct a new directory comparison object, to compare the
directories \var{a} and \var{b}. \var{ignore} is a list of names to
ignore, and defaults to \code{['RCS', 'CVS', 'tags']}. \var{hide} is a
list of names to hide, and defaults to \code{[os.curdir, os.pardir]}.
\end{classdesc}
\begin{methoddesc}[dircmp]{report}{}
Print (to \code{sys.stdout}) a comparison between \var{a} and \var{b}.
\end{methoddesc}
\begin{methoddesc}[dircmp]{report_partial_closure}{}
Print a comparison between \var{a} and \var{b} and common immediate
subdirctories.
\end{methoddesc}
\begin{methoddesc}[dircmp]{report_full_closure}{}
Print a comparison between \var{a} and \var{b} and common
subdirctories (recursively).
\end{methoddesc}
\begin{memberdesc}[dircmp]{left_list}
Files and subdirectories in \var{a}, filtered by \var{hide} and
\var{ignore}.
\end{memberdesc}
\begin{memberdesc}[dircmp]{right_list}
Files and subdirectories in \var{b}, filtered by \var{hide} and
\var{ignore}.
\end{memberdesc}
\begin{memberdesc}[dircmp]{common}
Files and subdirectories in both \var{a} and \var{b}.
\end{memberdesc}
\begin{memberdesc}[dircmp]{left_only}
Files and subdirectories only in \var{a}.
\end{memberdesc}
\begin{memberdesc}[dircmp]{right_only}
Files and subdirectories only in \var{b}.
\end{memberdesc}
\begin{memberdesc}[dircmp]{common_dirs}
Subdirectories in both \var{a} and \var{b}.
\end{memberdesc}
\begin{memberdesc}[dircmp]{common_files}
Files in both \var{a} and \var{b}
\end{memberdesc}
\begin{memberdesc}[dircmp]{common_funny}
Names in both \var{a} and \var{b}, such that the type differs between
the directories, or names for which \function{os.stat()} reports an
error.
\end{memberdesc}
\begin{memberdesc}[dircmp]{same_files}
Files which are identical in both \var{a} and \var{b}.
\end{memberdesc}
\begin{memberdesc}[dircmp]{diff_files}
Files which are in both \var{a} and \var{b}, whose contents differ.
\end{memberdesc}
\begin{memberdesc}[dircmp]{funny_files}
Files which are in both \var{a} and \var{b}, but could not be
compared.
\end{memberdesc}
\begin{memberdesc}[dircmp]{subdirs}
A dictionary mapping names in \member{common_dirs} to
\class{dircmp} objects.
\end{memberdesc}
Note that via \method{__getattr__()} hooks, all attributes are
computed lazilly, so there is no speed penalty if only those
attributes which are lightweight to compute are used.
|
