2.2 features

[John Schmitt]

Why do we have to wait for 2.2?  You can do this already.  

PythonWin 2.1 (#15, Apr 19 2001, 10:28:27) [MSC 32 bit (Intel)] on win32.
Portions Copyright 1994-2001 Mark Hammond (MarkH at ActiveState.com) - see
'Help/About PythonWin' for further copyright information.
>>> import types
>>> types.IntType
<type 'int'>
>>> assert isinstance(0,types.IntType)
>>> assert isinstance([],types.IntType)
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
AssertionError
>>> 

> -----Original Message-----
> From: Guido van Rossum [mailto:guido at python.org]
> Sent: Thursday, July 26, 2001 7:10 AM
> To: python-list at python.org
> Subject: Re: 2.2 features
> 
> 
> "Nick Perkins" <nperkins7 at home.com> writes:
> 
> > Here's a nice little use of type/class unification:
> > 
> > instead of using:
> > if type(x) is type(0):
> > 
> > we can use:
> > if type(x) is int:
> > 
> > or, for type checking..
> > 
> > assert type(num) is int
> > assert type(msg) is str
> > 
> > ( I assume the use of 'is', rather than '==',  is acceptable here )
> 
> Yes, 'is' is right.  But you should never use this; instead, you
> should use
> 
>   assert isinstance(num, int)
>   assert isinstance(msg, str)
> 
> --Guido van Rossum (home page: http://www.python.org/~guido/)
> -- 
> http://mail.python.org/mailman/listinfo/python-list
>