What is the output of the following snippet? t = [[3-i for i in range (3)] for j in range (3)] s = 0 for i in range(3): s += t[i][i] print(s)

t = [[3-i for i in range (3)] for j in range (3)]
s = 0
for i in range(3):
    s += t[i][i]
print(s)

• 7
• 6
• 4
• 2

Explanation: Let’s analyze this code:

• a list named t is created with the following characteristics:
  • the first for loop iterates through 0,1,2, with these operations: 3-0, 3-1, 3-2. The results are added to the list: [3,2,1]
  • the second for loop also iterates through 0,1,2, performing the previous operation three times,
  • the resulting list is the following: [[3, 2, 1], [3, 2, 1], [3, 2, 1]]
• the variable s is assigned the integer value of 0,
• a third for loop iterates through 0,1,2,
• the elements in positions [0][0], [1][1], [2][2] are added,
• the result is 3+2+1 = 6,
• the s variable is printed on the console.

More Questions: Python Essentials 1 – Module 3 Test