How to check queue length in Python

Question

How to check Queue\'s length in python?

I dont see they provide Queue.lenght in python....

http://docs.python.org/tutorial/datastructures.html

fr         


        

Answer 1

len(queue) should give you the result, 3 in this case.

Specifically, len(object) function will call object.__len__ method [reference link]. And the object in this case is deque, which implements __len__ method (you can see it by dir(deque)).

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queue= deque([])   #is this length 0 queue?

Yes it will be 0 for empty deque.