Buffered versus unbuffered output for Python in Windows

I use NppExec/Notepad++ to run Python scripts, and flush my output buffers continuously during runtime to update my console window with print statements (The default buffered output only shows all print statements after the script finishes execution).

This link shows that all you need to do is use the command python -u to get unbuffered output. Is there a downside to using this execution mode for all my Python scripts, regardless of the editor used? I'm not clear about the difference between a buffered an unbuffered output.

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