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use a set for membership testing

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Benjamin Peterson 2010-06-03 21:21:03 +00:00
parent 4653fb556c
commit 3b95934e05
1 changed files with 2 additions and 2 deletions
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4
Lib/site.py
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@ -276,12 +276,12 @@ def getsitepackages():
environment, and will return a list of full paths. environment, and will return a list of full paths.
""" """
sitepackages = [] sitepackages = []
seen = [] seen = set()
for prefix in PREFIXES: for prefix in PREFIXES:
if not prefix or prefix in seen: if not prefix or prefix in seen:
continue continue
seen.append(prefix) seen.add(prefix)
if sys.platform in ('os2emx', 'riscos'): if sys.platform in ('os2emx', 'riscos'):
sitepackages.append(os.path.join(prefix, "Lib", "site-packages")) sitepackages.append(os.path.join(prefix, "Lib", "site-packages"))