6.5 statcache -- An optimization of os.stat()
Deprecated since release 2.2.
Use os.stat() directly instead
of using the cache; the cache introduces a very high level of
fragility in applications using it and complicates application code
with the addition of cache management support.
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, includingstat(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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Release 2.2, documentation updated on December 21, 2001.