commit 50f948edda0e6465e194ecc50b85fa2646039b8d
author Serhiy Storchaka <storchaka@gmail.com> Sat Apr 15 18:35:46 2017 +0300
committer GitHub <noreply@github.com> Sat Apr 15 18:35:46 2017 +0300
tree fc337eff2d5d63301543cb5bd38e8944c9e46484
parent 5fbdfc36f397ad46f4057d527855dfacb77242ce

bpo-30011: Fixed race condition in HTMLParser.unescape(). (#1140)

Lib/HTMLParser.py

diff --git a/Lib/HTMLParser.py b/Lib/HTMLParser.py
index 3f97830..fb9380e 100644
--- a/Lib/HTMLParser.py
+++ b/Lib/HTMLParser.py
@@ -462,11 +462,12 @@
             else:
                 # Cannot use name2codepoint directly, because HTMLParser supports apos,
                 # which is not part of HTML 4
-                import htmlentitydefs
                 if HTMLParser.entitydefs is None:
-                    entitydefs = HTMLParser.entitydefs = {'apos':u"'"}
+                    import htmlentitydefs
+                    entitydefs = {'apos':u"'"}
                     for k, v in htmlentitydefs.name2codepoint.iteritems():
                         entitydefs[k] = unichr(v)
+                    HTMLParser.entitydefs = entitydefs
                 try:
                     return self.entitydefs[s]
                 except KeyError: