Computer >> Computer tutorials >  >> Programming >> Python

Python – Filter rows with required elements

When it is required to filter rows with required elements, a list comprehension and the ‘all’ operator is used.

Below is a demonstration of the same −

Example

my_list = [[261, 49, 61], [27, 49, 3, 261], [261, 49, 85], [1, 1, 9]]

print("The list is :")
print(my_list)

check_list = [49, 61, 261, 85]

my_result = [index for index in my_list if all(element in check_list for element in index)]

print("The result is :")
print(my_result)

Output

The list is :
[[261, 49, 61], [27, 49, 3, 261], [261, 49, 85], [1, 1, 9]]
The result is :
[[261, 49, 61], [261, 49, 85]]

Explanation

  • A list is defined and displayed on the console.

  • Another list of integers is defined.

  • A list comprehension is used to iterate over the list, and the ‘all’ operator is used to see if all the values of the integer list are present in the original list.

  • If so, it is added to a list, and is assigned to a variable.

  • This is the output that is displayed on the console.