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How do I force Python's print function to output to the screen?
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The flush argument of the print() function can be set to True to stop the function from buffering the output data and forcibly flush it. If the flush argument is set to True , the print() function will not buffer the data to increase the efficiency and will keep flushing it on each call.
In an interactive shell/terminal, we can simply use ctrl+l to clear the screen.
Use the fflush Function to Flush stdout Output Stream in C As a result, there are buffers maintained by the C library for handling the input/output operations when using the stdio function calls. If the user needs to force writing to kernel buffers, it needs to flush the given stream provided by the fflush function.
The Python print() function takes in any number of parameters, and prints them out on one line of text. The items are each converted to text form, separated by spaces, and there is a single '\n' at the end (the "newline" char). When called with zero parameters, print() just prints the '\n' and nothing else.
In Python 3, print can take an optional flush argument:
print("Hello, World!", flush=True) In Python 2 you'll have to do
import sys sys.stdout.flush() after calling print. By default, print prints to sys.stdout (see the documentation for more about file objects).
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