In <[EMAIL PROTECTED]>,
[EMAIL PROTECTED] wrote:
> On Apr 24, 1:41 pm, Steven Bethard <[EMAIL PROTECTED]> wrote:
>> Steven Howe wrote:
>>
>> > or try:
>> > thedict = { 'a': 1, 'b':2, 'c':3 }
>> > if 'a' in thedict.keys():
>> > print thedict['a']
>>
>> Better yet, just:
>>
>> if 'a' in thedict:
>> ...
>>
>> There's no need for the call to keys().
>
> Why not
>
> if thedict.has_key('a'):
> pass
> elde:
> pass
Additional to the speed argument, the ``in`` operator works with more
types, like lists, sets and "iterables". And if someone implements a
"container" class with membership testing, it is more likely he writes a
`__contains__()` method than a `has_key()` method.
Ciao,
Marc 'BlackJack' Rintsch
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