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Python len() Function

Example

Return the number of items in a list:

mylist = ["apple", "banana", "cherry"]
x = len(mylist)

Try it Yourself » Definition and Usage

The len() function returns the number of items in an object.

When the object is a string, the len() function returns the number of characters in the string.

Syntax Parameter Values Parameter Description object Required. An object. Must be a sequence or a collection More Examples Example

Return the number of characters in a string:

mylist = "Hello"
x = len(mylist)

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