[issue8757] Automatic set-to-frozenset conversions not thread-safe
Raymond Hettinger
report at bugs.python.org
Wed Aug 4 20:36:01 CEST 2010
Raymond Hettinger <rhettinger at users.sourceforge.net> added the comment:
I didn't disagree with you. The swap bodies implementation technique is not expected and is exploitable in a number of ways.
What outcome to you want? Eliminate the implicit set-to-frozenset conversion feature; introduce a non-mutating version that copies the entire set; or just document that the automatic conversion is non-atomic, temporarily mutating, and not thread-safe?
Personally, I've never been convinced of the value of this feature and would not feel sad to have it removed.
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