﻿ Python: Extract a specified column from a given nested list - w3resource

# Python: Extract a specified column from a given nested list

## Python List: Exercise - 108 with Solution

Write a Python program to extract a specified column from a given nested list.

Sample Solution:

Python Code:

``````def remove_column(nums, n):
result = [i.pop(n) for i in nums]
return result

list1 = [[1, 2, 3], [2, 4, 5], [1, 1, 1]]
n = 0
print("Original Nested list:")
print(list1)
print("Extract 1st column:")
print(remove_column(list1, n))

list2 = [[1, 2, 3], [-2, 4, -5], [1, -1, 1]]
n = 2
print("\nOriginal Nested list:")
print(list2)
print("Extract 3rd column:")
print(remove_column(list2, n))
```
```

Sample Output:

```Original Nested list:
[[1, 2, 3], [2, 4, 5], [1, 1, 1]]
Extract 1st column:
[1, 2, 1]

Original Nested list:
[[1, 2, 3], [-2, 4, -5], [1, -1, 1]]
Extract 3rd column:
[3, -5, 1]
```

Pictorial Presentation:

Flowchart:

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## Python: Tips of the Day

```print(2_000_000)
```2000000