Extract Rows with Even Length Strings in Python

When it is required to extract rows with even length strings, a list comprehension along with the ‘all’ operator and ‘%’ operator is used.

Below is a demonstration of the same −

Example

 Live Demo

my_list = [["python", "is", "best"], ["best", "good", "python"], ["is", "better"], ["for", "coders"]]

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

my_result = [row for row in my_list if all(len(element ) % 2 == 0 for element in row)]

print("The resultant list is :")
print(my_result)

Output

The list is :
[['python', 'is', 'best'], ['best', 'good', 'python'], ['is', 'better'], ['for', 'coders']]
The resultant list is :
[['python', 'is', 'best'], ['best', 'good', 'python'], ['is', 'better']]

Explanation

• A list of list with strings is defined and is displayed on the console.

• A list comprehension is used to iterate over the elements of the list.

• It checks to see if the elements have even length using the ‘all’ operator and modulus operator.

• If yes, it is stored in a list, and assigned to a variable.

• This variable is displayed as output on the console.