How to calculate the final difficulty?

Question

Python

There is this code:

#!/usr/bin/env python3

a = [10, 20, 30, 40, 50, 60]

for i in range(len(a)):
    print(i, a[i])

LIVE DEMO is here.
Please tell me if I used the correct approach to calculate the final complexity of this code?

len(a) # O(1)
for i in (0, 1, 2, ,3 ,4 ,5) # O(n)
print() # O(1)
total complexity: (O(1) * O( n)) * O(1) = O(n)

Answer 1

That's right