Default attribute values pattern
bruno.42.desthuilliers at wtf.websiteburo.oops.com
Mon Jan 21 19:19:59 CET 2008
cokofreedom at gmail.com a écrit :
>> Grab(argdict, key, default) is argdict.pop(key, default)
> "pop() raises a KeyError when no default value is given and the key is
> not found."
Then use it with a default value !-)
>> def grab(kw, key, default=None):
>> return kw.pop(key)
>> except KeyError:
>> return default
> So Bruno's technique seems to me to be the correct one as it catches
> the KeyError.
Note that I cancelled the message (too bad, doesn't work everywhere). I
totally agree with Arnaud on this, and should sometimes re-read the doc
for stuff I use so often I think I know them.
More information about the Python-list