nb.ipynb
for num in range(5):
    print(num)
else:
    print("I execute after the"
          " loop finishes!")
nb.ipynb
for n in range(2, 10):
    for x in range(2, n):
        if n % x == 0:
            print(n, "equals", x, "*", n // x)
            break
    else:
        # loop fell through without finding a factor
        print(n, "is a prime number")
[OUT]:

0
1
2
3
4
I execute after the loop finishes!
[OUT]:

2 is a prime number
3 is a prime number
4 equals 2 * 2
5 is a prime number
6 equals 2 * 3
7 is a prime number
8 equals 2 * 4
9 equals 3 * 3