projects / OpenSPARC-T2-SAM / blame
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| 54 | ||
| 55 | <H1><A NAME="SECTION008700000000000000000"> | |
| 56 | 6.7 <tt class="module">filecmp</tt> -- | |
| 57 | File and Directory Comparisons</A> | |
| 58 | </H1> | |
| 59 | ||
| 60 | <P> | |
| 61 | <A NAME="module-filecmp"></A> | |
| 62 | ||
| 63 | <P> | |
| 64 | The <tt class="module">filecmp</tt> module defines functions to compare files and | |
| 65 | directories, with various optional time/correctness trade-offs. | |
| 66 | ||
| 67 | <P> | |
| 68 | The <tt class="module">filecmp</tt> module defines the following functions: | |
| 69 | ||
| 70 | <P> | |
| 71 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
| 72 | <td><nobr><b><tt id='l2h-1814' xml:id='l2h-1814' class="function">cmp</tt></b>(</nobr></td> | |
| 73 | <td><var>f1, f2</var><big>[</big><var>, shallow</var><big>[</big><var>, use_statcache</var><big>]</big><var></var><big>]</big><var></var>)</td></tr></table></dt> | |
| 74 | <dd> | |
| 75 | Compare the files named <var>f1</var> and <var>f2</var>, returning <code>True</code> if | |
| 76 | they seem equal, <code>False</code> otherwise. | |
| 77 | ||
| 78 | <P> | |
| 79 | Unless <var>shallow</var> is given and is false, files with identical | |
| 80 | <tt class="function">os.stat()</tt> signatures are taken to be equal. | |
| 81 | ||
| 82 | <span class="versionnote">Changed in version 2.3: | |
| 83 | <var>use_statcache</var> is obsolete and ignored..</span> | |
| 84 | ||
| 85 | <P> | |
| 86 | Files that were compared using this function will not be compared again | |
| 87 | unless their <tt class="function">os.stat()</tt> signature changes. | |
| 88 | ||
| 89 | <P> | |
| 90 | Note that no external programs are called from this function, giving it | |
| 91 | portability and efficiency. | |
| 92 | </dl> | |
| 93 | ||
| 94 | <P> | |
| 95 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
| 96 | <td><nobr><b><tt id='l2h-1815' xml:id='l2h-1815' class="function">cmpfiles</tt></b>(</nobr></td> | |
| 97 | <td><var>dir1, dir2, common</var><big>[</big><var>, | |
| 98 | shallow</var><big>[</big><var>, use_statcache</var><big>]</big><var></var><big>]</big><var></var>)</td></tr></table></dt> | |
| 99 | <dd> | |
| 100 | Returns three lists of file names: <var>match</var>, <var>mismatch</var>, | |
| 101 | <var>errors</var>. <var>match</var> contains the list of files match in both | |
| 102 | directories, <var>mismatch</var> includes the names of those that don't, | |
| 103 | and <var>errros</var> lists the names of files which could not be | |
| 104 | compared. Files may be listed in <var>errors</var> because the user may | |
| 105 | lack permission to read them or many other reasons, but always that | |
| 106 | the comparison could not be done for some reason. | |
| 107 | ||
| 108 | <P> | |
| 109 | The <var>common</var> parameter is a list of file names found in both directories. | |
| 110 | The <var>shallow</var> and <var>use_statcache</var> parameters have the same | |
| 111 | meanings and default values as for <tt class="function">filecmp.cmp()</tt>. | |
| 112 | </dl> | |
| 113 | ||
| 114 | <P> | |
| 115 | Example: | |
| 116 | ||
| 117 | <P> | |
| 118 | <div class="verbatim"><pre> | |
| 119 | >>> import filecmp | |
| 120 | >>> filecmp.cmp('libundoc.tex', 'libundoc.tex') | |
| 121 | True | |
| 122 | >>> filecmp.cmp('libundoc.tex', 'lib.tex') | |
| 123 | False | |
| 124 | </pre></div> | |
| 125 | ||
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| 134 | <LI><A href="dircmp-objects.html">6.7.1 The <tt class="class">dircmp</tt> class</a> | |
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| 173 | <span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span> | |
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