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# Python Lists

Operations
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List Operations
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Documentation
schedule Jul 1, 2022
Last updated
local_offer Python
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A list is a collection of elements in a particular order. In Python, a list is represented by square brackets `[]`.

``` # List of fruitsfruits = ["apple", "orange","pear"]print(fruits) ['apple', 'orange', 'pear'] ```

Note that when you print a list, the square brackets are also returned.

# Examples

## Accessing elements in a list

We can access a particular element in a list by its index position:

``` fruits = ["apple", "orange","pear"]print(fruits[1]) orange ```
NOTE

Note index positions start at 0 not 1. Therefore by specifying `fruits[1]` we returned the second item in list `fruits`.

We can return the last item in a list by specifying index of `-1`:

``` fruits = ["apple", "orange","pear"]print(fruits[-1]) pear ```

This method is useful when you do not know the length of the list you are working with.

## Modifying elements in a list

We can also use index notation to modify elements in a list:

``` fruits = ["apple", "orange","pear"]fruits[1] = "raspberry"print(fruits) ['apple', 'raspberry', 'pear'] ```

The second element in the list `"orange"` has been replaced with new value `"raspberry"`.

## Slicing a list

To create a slice of the second and third items in a list:

``` fruits = ["apple", "orange","pear"]fruits[1:3] ['orange', 'pear'] ```

`fruits[1:3]` gets elements of `fruits` starting from index 1 up until but not including index 3.

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Published by Arthur Yanagisawa
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