Get Kth Column of Matrix using list comprehension

test_list = [[4, 5, 8], [8, 1, 20], [7, 12, 10]]

print("The original list is : " + str(test_list))

K = 2

res = [sub[K] for sub in test_list]

print("The Kth column of matrix is : " + str(res))

Words Frequency in String Shorthands

 # Using Counter() + split()

from collections import Counter

test_str = 'Python for engineers . Solution for python programs'

print("The original string is : " + str(test_str))

res = Counter(test_str.split())

print("The words frequency : " + str(dict(res)))