How to constantly update the print?

Question

Python

I want to do something like digital time so that seconds, minutes and hours pass inside the program, and I can see this at the beginning of a line that should constantly update its data, well, I can’t do it.

import time
sec = 0
minutes = 0
hour = 0
print(sec, minutes, hour)
while True:
  sec+=1
  time.sleep(1)
  if sec == 60:
    minutes+=1
    
  if minutes == 60:
    hour+=1

what can be added here so that print is constantly updated, well, it’s supposed to be like on a computer or phone.

Answer 1

import time
from os import system, name
def main():
    sec = 0
    minutes = 0
    hour = 0
    
    while True:
      hour_high = hour//10
      hour_low = hour%10

      min_high = minutes//10
      min_low = minutes%10

      sec_high = sec//10
      sec_low = sec%10

      timestring = f'{hour_high}{hour_low}:{min_high}{min_low}:{sec_high}{sec_low}'
      system('cls')
      print(timestring)  
      sec+=1
      time.sleep(1)
      if sec == 60:
        minutes+=1
        sec = 0
        
      if minutes == 60:
        hour+=1
        minutes = 0
      
if __name__ == '__main__':
    main()

Answer 2

Here everyone suggests system("cls"), although it would be more practical to use the \x08 character.
A simple example to understand:

print('foobar', flush=True, end='') #немедленный вывод без перевода строки
print('\x08'*3, flush=True, end='') #отступаем на три символа назад
print('xyz', flush=True, end='') #на экране будет выведено fooxyz

But this technique only works if:
1. The data is displayed strictly in one line, and the cursor remains on it.
2. The length of the overwritten part of the string is known.
3. Only one value per screen needs to be updated this way.
Otherwise, you either use the cls trick, or generally spit on the terminal and make a GUI.