Infinite dividing by 2

Question

I'm just a beginner in python. Im trying to make a script which divides a number (user input) infinitly by 2. I mean if user inputs it should divide it like this: "40/2 20/2 10/2 5/2 2.5/2 ..." My Code looks like this

print ('please insert a number')
num = input()
num=float(num)
while(num<1000):
    print(num/2)

Output is just user input divided by 2, and then the result is looped for ever. What can I do next to make my code as I want?

Answer 1

You can construct an infinite loop via a condition which is always True, e.g. scalar True:

num = float(input('Please insert a number:\n'))

while True:
    num /= 2
    print(num)

In practice, this isn't useful. You can, for example, easily insert a break statement so that your loop stops when you reach a lower bound. Here we end the loop when the float value is indistinguishable from 0.

num = float(input('Please insert a number:\n'))

while True:
    num /= 2
    print(num)
    if num == 0:
        break

Example with initial input of 500:

Please insert a number:
500
250.0
125.0
62.5
...
3.06e-322
1.53e-322
8e-323
4e-323
2e-323
1e-323
5e-324
0.0