python - Difference in For loop and while loop?

Question

This question already has answers here: question from:https://stackoverflow.com/questions/65907185/difference-in-for-loop-and-while-loop

Answer 1

They mostly do the same thing, or they can be configured to do the same thing. But generally, for loop is used if we know how long the loop should run, and while is used if we need to loop "while" a condition is satisfied.

for i in range(0,10):
   print("hello")

This will print "hello" 10 times, but if we want to print "hello" until a condition changes, we use while:

while(i != 20):
   print("hello")

This will loop forever until i is changed to 20.