flush – Page 3 – Tarik Billa

Why does printf not flush after the call unless a newline is in the format string?

September 9, 2022 by Tarik

The stdout stream is line buffered by default, so will only display what’s in the buffer after it reaches a newline (or when it’s told to). You have a few options to print immediately: Print to stderrinstead using fprintf (stderr is unbuffered by default): fprintf(stderr, “I will be printed immediately”); Flush stdout whenever you need … Read more

How can I flush the output of the print function?

August 28, 2022 by Tarik

In Python 3, print can take an optional flush argument: print(“Hello, World!”, flush=True) In Python 2, after calling print, do: import sys sys.stdout.flush() By default, print prints to sys.stdout (see the documentation for more about file objects).