如何在 Python 中获取列表中元素的数量？

Question

items = []
items.append("apple")
items.append("orange")
items.append("banana")

# FAKE METHOD::
items.amount()  # Should return 3

How do I get the number of elements in the list?

转载于:https://stackoverflow.com/questions/1712227/how-to-get-the-number-of-elements-in-a-list-in-python

Answer 1

The len() function can be used with a lot of types in Python - both built-in types and library types.

>>> len([1,2,3])
3