A question about Python Classes
python at mrabarnett.plus.com
Thu Apr 21 20:00:08 CEST 2011
On 21/04/2011 18:12, Pascal J. Bourguignon wrote:
> chad<cdalten at gmail.com> writes:
>> Let's say I have the following....
>> class BaseHandler:
>> def foo(self):
>> print "Hello"
>> class HomeHandler(BaseHandler):
>> Then I do the following...
>> test = HomeHandler()
>> How can HomeHandler call foo() when I never created an instance of
> But you created one!
No, he didn't, he created an instance of HomeHandler.
> test is an instance of HomeHandler, which is a subclass of BaseHandler,
> so test is also an instance of BaseHandler.
test isn't really an instance of BaseHandler, it's an instance of
HomeHandler, which is a subclass of BaseHandler.
If you do this:
test = HomeHandler()
then you'll find:
>>> isinstance(test, BaseHandler)
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