Thanks Chris and Dieter. I think I got it. It seems it follows the __mro__ of
the caller class, not the current class __mro_.
if __name__ == '__main__':
print('MRO of SortedIntList {}'.format(SortedIntList.__mro__))
print('MRO of IntList {}'.format(IntList.__mro__))
# MRO of SortedIntList (<class '__main__.SortedIntList'>, <class
'__main__.IntList'>, <class '__main__.SortedList'>, <class
'__main__.SimpleList'>, <class 'object'>)
# MRO of IntList (<class '__main__.IntList'>, <class '__main__.SimpleList'>,
<class 'object’>)
I thought obj.add(0) goes to the IntList by following its factory class
__mro__, and then it follows the __mro__ of the current class(IntList) which is
SimpleList .
Thanks again.
Thanks,
Arup Rakshit
a...@zeit.io
> On 30-Mar-2019, at 7:02 AM, Chris Angelico <ros...@gmail.com> wrote:
>
> On Fri, Mar 29, 2019 at 11:54 PM Arup Rakshit <a...@zeit.io> wrote:
>>
>> Now when I call the add method on the SortedIntList class’s instance, I was
>> expecting super.add() call inside the IntList class add method will dispatch
>> it to the base class SimpleList. But in reality it doesn’t, it rather
>> forwards it to the SortedList add method. How MRO guides here can anyone
>> explain please?
>>
>
> When you call super, you're saying "go to the next in the MRO". You
> can examine the MRO by looking at SortedIntList.__mro__ - that should
> show you the exact order that methods will be called.
>
> ChrisA
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