Roy Smith wrote: > Fredrik Tolf <python-list@python.org> wrote: > >If I have a variable which points to a function, can I check if certain > >argument list matches what the function wants before or when calling it? > > > >Currently, I'm trying to catch a TypeError when calling the function > >(since that is what is raised when trying to call it with an illegal > >list), but that has the rather undesirable side effect of also catching > >any TypeErrors raised inside the function. Is there a way to avoid that? > > The only way is to read the documentation for the function (or, the > source code). > > Can you be a little more specific about what you're trying to do? Can > you post your code?
if you know ahead of runtime which methods are at issue and what method signatures you want, multimethod decorators, maybe? http://www.artima.com/weblogs/viewpost.jsp?thread=101605 (read comments: PJE, ian bicking or you can arg-test inside the method, which isn't much fun http://www.python.org/doc/faq/programming.html#how-can-i-overload-constructors-or-methods-in-python -- http://mail.python.org/mailman/listinfo/python-list
