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gh-128982: Substitute regular expression in http.cookiejar.join_header_words for an efficient alternative (GH-128983)

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The function does not anymore rely on a regular expression
to find alphanumeric characters and underscores.
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Bénédikt Tran 2025-02-26 13:01:32 +01:00 • committed by GitHub
parent 64ccbbbf36
commit 56e1900681
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2 changed files with 3 additions and 1 deletions
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2
Lib/http/cookiejar.py
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@ -448,7 +448,7 @@ def join_header_words(lists):
attr = [] attr = []
for k, v in pairs: for k, v in pairs:
if v is not None: if v is not None:
if not re.search(r"^\w+$", v): if not v.isalnum() and '_' not in v:
v = HEADER_JOIN_ESCAPE_RE.sub(r"\\\1", v) # escape " and \ v = HEADER_JOIN_ESCAPE_RE.sub(r"\\\1", v) # escape " and \
v = '"%s"' % v v = '"%s"' % v
k = "%s=%s" % (k, v) k = "%s=%s" % (k, v)

2
Misc/NEWS.d/next/Library/2025-01-18-11-40-11.gh-issue-128982.557lS5.rst Normal file
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@ -0,0 +1,2 @@
Improve the performance of :func:`!http.cookiejar.join_header_words` by up
to 35%. Patch by Bénédikt Tran.