Thomas Lehmann <iris-und-thomas-lehm...@t-online.de> writes: > <code> > if data.has_key(key): > value = data[key] > </code> > > But this does mean (does it?) that the dictionary is searched two > times! If so, can somebody show me how to do this in one step?
value = data.get(key, None) sets value to None if the key is not in the dictionary. You can use some other sentinel if None might actually be a value in the dictionary. One way to get a unique sentinel is: sentinel = object() You can also use exception handling (this is quite efficient in Python) as Chris Rebert mentioned. -- http://mail.python.org/mailman/listinfo/python-list
