how to loop until a condition is met python code example

Example 1: python loop until condition met

finished = False
while not finished:
    ... do something...
    finished = evaluate_end_condition()

Example 2: how to repeat code in python until a condition is met

a = 1
b = 1
while (a<10):
  print ('Iteration',a)
  a = a + 1
  b = b + 1
  if (b == 4):
    break
print ('While loop terminated')