Matthew Barnett <pyt...@mrabarnett.plus.com> added the comment:
Argument 4 of re.sub is the maximum number of replacements, NOT flags:
Help on function sub in module re:
sub(pattern, repl, string, count=0, flags=0)
Return the string obtained by replacing the leftmost
non-overlapping occurrences of the pattern in string by the
replacement repl. repl can be either a string or a callable;
if a string, backslash escapes in it are processed. If it is
a callable, it's passed the match object and must return
a replacement string to be used.
re.I is 2, so you're telling it to perform at most 2 replacements.
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nosy: +mrabarnett
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<http://bugs.python.org/issue12078>
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