def __len__(self):
"""
Return number of elements sorted in array
"""
return self.n
To my understanding, we are redefining what the method len will return for our class. Am I correct or there is a bigger picture?
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shubhamprashar
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`len` It is not a method of your class. What you are doing is implementing a protocol. The function `len` knows (or expects) that the object it takes as a parameter will have that `__len__` method implemented so it will call it. You can think of it as how interfaces work in other languages. – Netwave Oct 01 '20 at 12:12