"Che M" <[email protected]> wrote
Since this is the tutor list, I'd like to ask some questions about
structures used here that I haven't encountered before. I hope
you'll excuse me asking
Thats OK.
class Payoffs(list):
def __init__(self, value=None):
list.__init__(self)
This class is a list that has methods? That seems sort
of unusual to me. Am I interpreting that right?
Its right and normal. Standard Python lists have methids try dir(list)
How is this class called? With a list AND a value?
No, just a value, like any other class.
All that is happening is normal class definition where the
superclass is a built in type.
does it mean to initialize a list (the third line?).
Its initialising the underlying list - the superclass - the python list
object.
Although it may not work as expected, I suspect the OP may need
to do this via creating a __new__ method.
here. But if value == None, was there any list to extend,
It means no value was provided so we are creating
a default one
Why not just pass a list and to a class directly, and if
not use a default list without having to use .extend()?
I'm not sure why extend is being used - I didn't look that
closely, but essentially the OP is doing what you suggest.
def __repr__(self):
What is the reason for using __repr__() here and also
this |1 style? I have not seen this before.
Its the OPs prefered style of representing his list.
You can always override repr to present the object in a more
readable style - where readable is subjective.
HTH,
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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