Overwriting/clearing previous console line

Question

My problem is, that I want to be able to overwrite/clear previous printed line in python console. This question has been asked many times (Python - Remove and Replace Printe

Answer 1

You need to run your program form the command line, not from within IDLE.

Then, this should work:

import sys
import time

for i in range(10):
    sys.stdout.write("\r" + "Loading" + "." * i)
    time.sleep(1)
    sys.stdout.flush()
print()

The \r goes to beginning of the line. So you have to make sure the string you print is at least as long as the one before. Otherwise, you will see parts of the previous print.

Answer 2

You're trying to use ANSI escape sequences to move the cursor. Windows doesn't support those by default. To enable them, you could install the colorama module with pip install colorama in your terminal, then in Python:

import colorama
colorama.init()

If you've upgraded to Windows 10, you can enable support with this instead:

import ctypes
kernel32 = ctypes.windll.kernel32
kernel32.SetConsoleMode(kernel32.GetStdHandle(-11), 7)

(Source: https://stackoverflow.com/a/36760881/6379747)