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bpo-14678: Update zipimport to support importlib.invalidate_caches() (GH-24159)

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Added an invalidate_caches() method to the zipimport.zipimporter class based on the implementation of importlib.FileFinder.invalidate_caches(). This was done by adding a get_files() method and an _archive_mtime attribute to zipimport.zipimporter to check for updates or cache invalidation whenever the cache of files and toc entry information in the zipimporter is accessed.
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Desmond Cheong 2021-03-09 04:06:02 +08:00 • committed by GitHub
parent bbba28212c
commit 3abf6f0102
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5 changed files with 1020 additions and 939 deletions
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Lib/zipimport.py
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@ -321,6 +321,16 @@ class zipimporter(_bootstrap_external._LoaderBasics):
return ZipReader(self, fullname)
def invalidate_caches(self):
"""Reload the file data of the archive path."""
try:
self._files = _read_directory(self.archive)
_zip_directory_cache[self.archive] = self._files
except ZipImportError:
_zip_directory_cache.pop(self.archive, None)
self._files = None
def __repr__(self):
return f'<zipimporter object "{self.archive}{path_sep}{self.prefix}">'