The cmp module defines a function to compare files, taking all
sort of short-cuts to make it a highly efficient operation.
The cmp module defines the following function:
- cmp (f1, f2)
-
Compare two files given as names. The following tricks are used to
optimize the comparisons:
- Files with identical type, size and mtime are assumed equal.
- Files with different type or size are never equal.
- The module only compares files it already compared if their
signature (type, size and mtime) changed.
- No external programs are called.
Example:
>>> import cmp
>>> cmp.cmp('libundoc.tex', 'libundoc.tex')
1
>>> cmp.cmp('libundoc.tex', 'lib.tex')
0
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