how to system quit from a loop in python code example

Example 1: python exit for loop

# python 3

for x in range(1, 10):
    print(x)
    if x == 4:
        break
# prints 1 to 4

Example 2: how to exit a loop in python

print("enter a number")
num=int(input())
for i in range(2,num+1):
    if(num%i==0):
        print("smallest divisor is",i)
        break