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6.5 statcache -- An optimization of os.stat()
The statcache module provides a simple optimization to
os.stat(): remembering the values of previous invocations.
The statcache module defines the following functions:
- stat(path)
-
This is the main module entry-point.
Identical for os.stat(), except for remembering the result
for future invocations of the function.
The rest of the functions are used to clear the cache, or parts of
it.
- reset()
-
Clear the cache: forget all results of previous stat()
calls.
- forget(path)
-
Forget the result of
stat(path) , if any.
- forget_prefix(prefix)
-
Forget all results of
stat(path) for path starting
with prefix.
- forget_dir(prefix)
-
Forget all results of
stat(path) for path a file in
the directory prefix, including stat(prefix) .
- forget_except_prefix(prefix)
-
Similar to forget_prefix(), but for all path values
not starting with prefix.
Example:
>>> import os, statcache
>>> statcache.stat('.')
(16893, 2049, 772, 18, 1000, 1000, 2048, 929609777, 929609777, 929609777)
>>> os.stat('.')
(16893, 2049, 772, 18, 1000, 1000, 2048, 929609777, 929609777, 929609777)
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