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Iskander Ismagilov13,298 Points
Monster.battlecry() and Monster().battlecry()
class Monster: sound = 'roar' def battlecry(self): return self.sound.upper()
I have 2 questions:
When importing Monster in shell, if: 1) Monster.battlecry() it gives TypeError: battlecry() missing 1 required positional argument: 'self' 2)Monster().battlecry() if returns 'ROAR' How parentheses after Monster affect on the result?
jabber = Monster() So Monster.battlecry(jabber) == jabber.battlecry() I want to understand how jabber in jabber.battlecry() from argument of a method becomes a caller of it and it doesn't bring the TypeError of missing positional argument.
Keli'i Martin8,227 Points
Monster is the class. In order to properly call the function
battlecry(), you need an instance of the
Monster class. This is accomplished by calling
Monster(). In this case, the instance itself doesn't have a name.
jabber = Monster(), you are creating another instance of the
Monster class. This time, the instance does have a name,
jabber is an actual instance of the class, you can call
jabber.battlecry() without getting an errort.
Hope that clears it up a little.