Armando Serrano Lombillo a écrit : > Why does Python give an error when I try to do this: > >>>> len(object=[1,2]) > Traceback (most recent call last): > File "<pyshell#40>", line 1, in <module> > len(object=[1,2]) > TypeError: len() takes no keyword arguments > > but not when I use a "normal" function: > >>>> def my_len(object): > return len(object) > >>>> my_len(object=[1,2]) > 2
In the second case, the name of the argument *is* 'object'. Which is not the case for the builtin len (which, fwiw, has type 'builtin_function_or_method', not 'function', so inspect.getargspec couldn't tell me more). <ot> While we're at it, you should avoid using builtin's names for identifiers - here, using 'object' as the arg name shadows the builtin 'object' class). </ot> -- http://mail.python.org/mailman/listinfo/python-list
