On Tue, Jan 4, 2011 at 2:49 AM, Michael Foord fuzzyman@voidspace.org.uk wrote:
I think someone else pointed this out, but replacing builtins externally to a module is actually common for testing. In particular replacing the open function, but also other builtins, is often done temporarily to replace it with a mock. It seems like this optimisation would break those tests.
Hm, I already suggested to make an exception for open, (and one should be added for __import__) but if this is done for other builtins that is indeed a problem. Can you point to example code doing this?
-- --Guido van Rossum (python.org/~guido)