In this notebook, I will go over different ways of removing items from Python list.

Let us create a list of numbers.

```
list_of_numbers = [i for i in range(20)]
```

```
list_of_numbers
```

Python list.clear() will remove all the elements from a list.

```
list_of_numbers.clear()
```

```
list_of_numbers
```

```
list_of_numbers = [i for i in range(20)]
```

Python list.pop() method removes the element using index. If there is no index specified, it removes the last element from the list.

```
list_of_numbers.pop()
```

Above command returns the index of the element which is removed from the list. Above command will remove the 20th element from the list.

```
list_of_numbers
```

Let us remove the element from the list by index.

```
list_of_numbers.pop(7)
```

If we provide an index which is not in the list, Python list will throw an error.

```
list_of_numbers.pop(20)
```

```
list_of_numbers
```

We can also remove an element from list by value.

For example let us remove the element 16 from the list.

```
list_of_numbers.remove(16)
```

```
list_of_numbers
```

Using del, we can remove the element by index as we can do using pop().

```
del list_of_numbers[0]
```

```
list_of_numbers
```

To remove the last element from the list, specify -1 as index.

```
del list_of_numbers[-1]
```

```
list_of_numbers
```

Using del, we can also delete a range of numbers. In the example below, we have specified the range as 0:1, which means starting from zeroth index delete everything until index 1 (not including value at index 1).

```
del list_of_numbers[0:1]
```

```
list_of_numbers
```

In below example, values at index 0 and 1 will be deleted.

```
del list_of_numbers[0:2]
```

```
list_of_numbers
```

We can also use del to remove items at fixed number of intervals.

In below example, we are deleting every 2nd number from index 2 to 8.

```
del list_of_numbers[2:8:2]
```

```
list_of_numbers
```

Another example: We are deleting every 3rd number starting from index 0 to 8.

```
del list_of_numbers[0:8:3]
```

```
list_of_numbers
```

If we want to remove elements using a condition, Python list comprehensions are very useful.

Let us remove all the elements which are multiple of 2.

```
print([i for i in list_of_numbers if i % 2 != 0])
```

All the above list removal methods also work even if list contains a data type which is not numbers.

```
list_of_strings = ['John', 'Stacy', 'Renee', 'Jeff']
```

```
list_of_strings.pop()
```

```
list_of_strings.remove('Stacy')
```

```
list_of_strings
```

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