How to Force Python's `print` Function to Output Immediately?

How to Force Immediate Output from the Python Print Function

In Python, the print function typically buffers output before it appears on the screen. This can be useful for improving performance, but in certain situations, you may want to flush the output immediately.

Python 3:

In Python 3, the print function accepts an optional flush argument. Setting it to True forces the output to be flushed to the screen immediately:

print("Hello, World!", flush=True)

Python 2:

In Python 2, there is no direct way to flush the output of the print function. However, you can use the sys module as follows:

import sys
sys.stdout.flush()

By default, the print function writes to the sys.stdout file object. Flushing this file object forces the output to be displayed immediately.

Note:

Keep in mind that explicitly flushing output can impact performance. It's generally not recommended to do this frequently, unless absolutely necessary.

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