#len

Description: Get the length (by calling the object's __len__ method).

def len(obj):
    '''
    Get length

    :param obj: An object
    :return: The length of the object
    '''

Example:

print(len('hello world'))
print(len([1, 2, 3, 4, 5]))
print(len({'name': 'Alice', 'age': 17}))
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