Why print in Python doesn't pause when using sleep in a loop?

Question

This code:

import time
for i in range(10):
    print(i)
    time.sleep(.5)

Causes my computer to hang for 5 seconds, and then print out 0-9

Answer 1

Try this:

for i in range(10):
        sys.stdout.write('\r' + str(i))
        time.sleep(.5)

here '/r' is carriage return, it brings the cursor first place again.