Type checking in python?

[Armin Steinhoff]

In article <Ptvc5.40687$MT.1455524 at news-west.usenetserver.com>, Matthew says...
>
>It would be nice if I could do something like:
>
>  def my_func(int foo, list bar, Quux quux):
>     ...
>
>rather than
>
>  def my_func(foo, bar, quux):
>     if not isinstance(quux, Quux):

That's plain C ...

      if not quux.isinstance(Quux): 

is more flexible ... so you have just to implement that method in your class
definition

Regards

Armin

>        raise RuntimeError("param 'quux' must be of class 'Quux'")
>
>Is there any plans on doing this for Python 3000?  Or will something
>like this never be a part of Python?
>
>