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Update importlib.invalidate_caches() to be more general.

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This commit is contained in:
Brett Cannon 2012-02-27 18:15:42 -05:00
parent 9a4d7ddb6c
commit b46a1793a7
5 changed files with 62 additions and 38 deletions
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19
Lib/importlib/_bootstrap.py
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@ -160,17 +160,6 @@ code_type = type(_wrap.__code__)
# Finder/loader utility code ##################################################
_cache_refresh = 0
def invalidate_caches():
"""Invalidate importlib's internal caches.
Calling this function may be needed if some modules are installed while
your program is running and you expect the program to notice the changes.
"""
global _cache_refresh
_cache_refresh += 1
def set_package(fxn):
"""Set __package__ on the returned module."""
@ -768,7 +757,10 @@ class _FileFinder:
self._path_mtime = -1
self._path_cache = set()
self._relaxed_path_cache = set()
self._cache_refresh = 0
def invalidate_caches(self):
"""Invalidate the directory mtime."""
self._path_mtime = -1
def find_module(self, fullname):
"""Try to find a loader for the specified module."""
@ -777,10 +769,9 @@ class _FileFinder:
mtime = _os.stat(self.path).st_mtime
except OSError:
mtime = -1
if mtime != self._path_mtime or _cache_refresh != self._cache_refresh:
if mtime != self._path_mtime:
self._fill_cache()
self._path_mtime = mtime
self._cache_refresh = _cache_refresh
# tail_module keeps the original casing, for __file__ and friends
if _relax_case():
cache = self._relaxed_path_cache