Eric V. Smith added the comment:
I think the best we could do is have None.__format__ be:
def __format__(self, fmt):
return str(self).__format__(fmt)
Or its logical equivalent.
But this seems more like papering over a bug, instead of actually fixing a
problem. My suggestion is to use:
"{!s}".format(None)
That is: if you want to format a string, then explicitly force the argument to
be a string.
I don't think None should be special and be auto-converted to a string.
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<http://bugs.python.org/issue7994>
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