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Python Program that prints the rows of a given length from a matrix
When it is required to print the row of a specific length from a matrix, list comprehension is used.
Example
Below is a demonstration of the same
my_list = [[22, 4, 63, 7], [24, 4, 85], [95], [2, 55, 4, 7, 91], [5, 31, 1]]
print("The list is :")
print(my_list)
my_key = 4
my_result = [sub for sub in my_list if len(sub) == my_key]
print("The resultant list is :")
print(my_result)Output
The list is : [[22, 4, 63, 7], [24, 4, 85], [95], [2, 55, 4, 7, 91], [5, 31, 1]] The resultant list is : [[22, 4, 63, 7]]
Explanation
A list of list is defined and is displayed on the console.
A key value is defined.
The list comprehension is used to iterate through the list, and the length of every element is checked to be equal to the key.
This is assigned to a variable.
This is the output that is displayed on the console.
Updated on: 14-Sep-2021
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