Type hierarchy

Thomas Heller theller at python.net
Fri Jun 13 19:00:44 CEST 2003


Gerrit Holl <gerrit at nl.linux.org> writes:

> Hi,
> 
> currently, almost all types directly inherit from object. The only
> exceptions are string and unicode, which inherit from basestring.
> But wouldn't a type hierarchy be very useful for other types as
> well? For example, checking whether something is a number, currently
> needs isinstance(o, int) or isinstance(o, long), or float...

You can do it with isinstance(o, (long, float, int, complex))
(although most of the time you better avoid typechecks).

Thomas




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