From: Dennis Sweeney <36520290+sweeneyde@users.noreply.github.com>
Date: Wed, 31 Aug 2022 01:39:51 +0000 (-0400)
Subject: gh-95865: Speed up urllib.parse.quote_from_bytes() (GH-95872)
X-Git-Tag: v3.12.0a1~509
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8ba22b90cafdf83d26318905a021311c6932d2c0;p=thirdparty%2FPython%2Fcpython.git

gh-95865: Speed up urllib.parse.quote_from_bytes() (GH-95872)
---

diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index fd6d9f44c626..f25c770068bd 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -906,7 +906,7 @@ def quote_from_bytes(bs, safe='/'):
     if not bs.rstrip(_ALWAYS_SAFE_BYTES + safe):
         return bs.decode()
     quoter = _byte_quoter_factory(safe)
-    return ''.join([quoter(char) for char in bs])
+    return ''.join(map(quoter, bs))
 
 def urlencode(query, doseq=False, safe='', encoding=None, errors=None,
               quote_via=quote_plus):
diff --git a/Misc/NEWS.d/next/Library/2022-08-11-03-16-48.gh-issue-95865.0IOkFP.rst b/Misc/NEWS.d/next/Library/2022-08-11-03-16-48.gh-issue-95865.0IOkFP.rst
new file mode 100644
index 000000000000..aa7c73ff1a35
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-08-11-03-16-48.gh-issue-95865.0IOkFP.rst
@@ -0,0 +1 @@
+Speed up :func:`urllib.parse.quote_from_bytes` by replacing a list comprehension with ``map()``.