[issue7300] Unicode arguments in str.format()

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

My patch converts the format string to unicode using the default encoding. It's inconsistent with str%args: str%args converts str to unicode using the ASCII charset (if a least one argument is an unicode string), not the default encoding.

>>> "\xff%s" % u'\xe9'
...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xff in position 0: ordinal not in range(128)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7300>
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