How can I get real-time output while using subprocess.Popen()?

Question

For example, the youtube-dl command.

In Powershell, there is a progress bar that is continuously updated while downloading.

like the third line in this image

But in python，the third line of output will only appear after it reaches 100%.

This is my code.

import subprocess
f = subprocess.Popen('youtube-dl -f 160 https://youtu.be/W8l5zlR_3_E', shell=True, stdout=subprocess.PIPE)
for i in f.stdout:
    print(i.decode(encoding="utf-8"), end="")