[issue5800] make wsgiref.headers.Headers accept empty constructor

Phillip J. Eby report at bugs.python.org
Sun Nov 21 19:38:54 CET 2010

Phillip J. Eby <pje at telecommunity.com> added the comment:

Yes, please consider the type->isinstance part of the change rejected.  I just got done reverting a bunch of those in 3.2.  Where WSGI specifies types, it means "type() is", not "isinstance".

(The 3.x version of wsgiref does not need to be executable on 2.x versions, but this doesn't mean the protocol itself can be altered in backwards-incompatible ways, just the implementation.)


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