> doesTypeExist=filter(lambda x: typeofstring in x.type, all_types) > > if 'teststring' in [s.type for s in all_types] > this works which is better in terms of speed???
These do two different things. The first returns a list of all_types entries that match The second returns true or false if *any* string matches. The first can be rewritten without lambda using a list comprehension: [ item for item in all_types if teststring in item['type'] ] Calling functions in python is usually fairly slow so using filter/lambda with its function call per item is probably slower than either of the list comprehension methods. If in doubt measure it... Alan G. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
