What does the len function in python mean?

len() function:

Python len() function returns the length of the object (character, list, tuple, etc.) or the number of items.

len() method syntax:

len( s )

Parameters: s -- object.

Return value: Return the length of the object.

The following examples show how to use len():

>>>str = "runoob"
>>> len(str)             # 字符串长度
6
>>> l = [1,2,3,4,5]
>>> len(l)               # 列表元素个数
5

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