how to restart a loop in python code example

Example 1: how to restart loop python

i=2
while i < n:
    if something:
       do something
       i += 1
    else: 
       do something else  
       i = 2 #restart the loop

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

Example 3: how to exit a loop in python programix

for letter in 'Python':     # First Example
   if letter == 'h':
      break
   print 'Current Letter :', letter