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> Date: Tue, 21 May 2013 14:53:54 -0500
> From: bahamutzero8...@gmail.com
> To: python-list@python.org
[...]
>>
> What myth? People should indeed be using .format(), but no one said %
> formatting was going away soon. Also, the suggested change to the docs
> wasn't made and the issue is closed. The current docs do not say that %
> formatting isn't going to be deprecated, but it does mention its
> caveats and suggests .format(). If you are trying to say that % formatting
> will never ever go away, then you are wrong. It is highly
> unlikely to go away in a 3.x release, but /may/ get phased out in Python 4.0.
I vote for keeping str.__mod__()!
Anyway, is it possible to overload str.__mod__() without deriving a class? I
mean to have something like:
old_mod = str.__mod__
def new_mod(x):
global old_mod
try:
old_mod(x)
except ValueError, ex:
#catch ValueError: unsupported format character ',' (0x2c) at index 1
#process new '%,d' format here
return '{:,}'.format(x) #just to illustrate the behaviour. it would
have it's own faster code
str.__mod__ = new_mod #this raises TypeError: can't set attributes of
built-in/extension type 'str'
sys.stdout.write('num=%,d\n' % 1234567)
> --
> CPython 3.3.2 | Windows NT 6.2.9200 / FreeBSD 9.1
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