bpo-39595: Improve zipfile.Path performance (#18406)
* Improve zipfile.Path performance on zipfiles with a large number of entries.
* 📜🤖 Added by blurb_it.
* Add bpo to blurb
* Sync with importlib_metadata 1.5 (6fe70ca)
* Update blurb.
* Remove compatibility code
* Add stubs module, omitted from earlier commit
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
diff --git a/Lib/importlib/metadata.py b/Lib/importlib/metadata.py
index ae8ecf9..831f593 100644
--- a/Lib/importlib/metadata.py
+++ b/Lib/importlib/metadata.py
@@ -391,6 +391,7 @@
def __init__(self, root):
self.root = root
+ self.base = os.path.basename(root).lower()
def joinpath(self, child):
return pathlib.Path(self.root, child)
@@ -413,12 +414,11 @@
)
def is_egg(self, search):
- root_n_low = os.path.split(self.root)[1].lower()
-
+ base = self.base
return (
- root_n_low == search.normalized + '.egg'
- or root_n_low.startswith(search.prefix)
- and root_n_low.endswith('.egg'))
+ base == search.versionless_egg_name
+ or base.startswith(search.prefix)
+ and base.endswith('.egg'))
def search(self, name):
for child in self.children():
@@ -439,6 +439,7 @@
prefix = ''
suffixes = '.dist-info', '.egg-info'
exact_matches = [''][:0]
+ versionless_egg_name = ''
def __init__(self, name):
self.name = name
@@ -448,6 +449,7 @@
self.prefix = self.normalized + '-'
self.exact_matches = [
self.normalized + suffix for suffix in self.suffixes]
+ self.versionless_egg_name = self.normalized + '.egg'
class MetadataPathFinder(DistributionFinder):