Paddy a écrit :
> On 21 Feb, 23:33, "[EMAIL PROTECTED]"
> <[EMAIL PROTECTED]> wrote:
>>> What you can't do (that I really miss) is have a tree of assign-and-test
>>> expressions:
>>> import re
>>> pat = re.compile('some pattern')
>>> if m = pat.match(some_string):
>>> do_something(m)
>>> else if m = pat.match(other_string):
>>> do_other_thing(m)
>>> else:
>>> do_default_thing()
>> What you want is:
>>
>> for astring, afunc in ((some_string, do_something), (other_string,
>> do_other_thing)):
>> m = pat.match(astring)
>> if m:
>> afunc(m)
>> break
>> else:
>> do_default_thing()
>
> The Bruno transform? :-)
I do not claim any paternity on this idiom. FWIW, must be (in one or
another variant) in quite a lot of texts / posts / sites / any other
resource about Python.
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