On Sun, Aug 28, 2011 at 2:20 PM, Travis Parks <jehugalea...@gmail.com> wrote: > I am trying to write an algorithms library in Python. Most of the > functions will accept functions as parameters. For instance, there is > a function called any: > > def any(source, predicate): > for item in source: > if predicate(item): > return true; > return false; > > There are some things I want to make sure of. 1) I want to make sure > that source is iterable. 2) More importantly, I want to make sure that > predicate is callable, accepting a thing, returning a bool. <snip> > I am more concerned with the number of parameters.
That can be introspected using the `inspect` module: http://docs.python.org/library/inspect.html#inspect.getargspec > Finally, can I use decorators to automatically perform these checks, > instead of hogging the top of all my methods? Certainly. Although, as others have said, the cost-benefit ratio of adding code to perform such somewhat-redundant checks might make it not worth the trouble. Cheers, Chris -- http://mail.python.org/mailman/listinfo/python-list
