# 1, 2, 3 # 4, 5, 6 # 7, 8, 9 #Task: remove the middle column temp = [[1,2,3],[4,5,6],[7,8,9]] newTemp = [[x[0],x[2]] for x in temp] #now newTemp is: # 1, 3 # 4, 6 # 7, 9