Python provides an inbuilt function `len()`

which is used to find the size or length of a list.

Size or length of a list means the total number of elements in it.

**len() syntax**

`len()`

function accepts the list whose size you want to calculate as argument and returns its length as shown below.len(list)

`len()`

function can be used with other structures as well such as **a tuple**, set or **a string**.

In case of string, `len()`

returns the number of characters in the string.

**len() example**

Example of `len()`

function to find the length of a list is given below.

numbers = [] numbers.append(1) numbers.append(2) numbers.append(3) print('Length of list is:',len(numbers))

This code example creates an empty list and then adds elements using **list append()** method. After adding elements, it prints the length of list with `len()`

function.

Output is

Length of list is: 3

`len()`

function, there are **other methods to find the length of list**.

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