Sleeping and printing without newline? [duplicate]

Question

If I run this code:

for x in range(10):
    time.sleep(1)
    print("a")

It will do exactly what it should. But if I run this:

for x in range(10):
    time.sleep(1)
    print("a", end="")

It will wait the entire 10 seconds and then print the 10 a's.

How can I prevent this?

Answer 1

Flush stdout after print.

import time
import sys

for x in range(10):
    time.sleep(1)
    print("a", end="")
    sys.stdout.flush()

---

Python 3.3 print function has optional flush parameter; You can write as follow in Python 3.3+.

import time

for x in range(10):
    time.sleep(1)
    print("a", end="", flush=True)