Eric Eastwood a3bbd7eeab Explain why we flush_buffer() for Python print(...) output (#18420) ...

Spawning from using this code elsewhere and not knowing why it's there.

Based on this article and @reivilibre's experience mentioning
`PYTHONUNBUFFERED=1`,

> #### programming languages where the default “print” statement buffers
> 
> Also, here are a few programming language where the default print
statement will buffer output when writing to a pipe, and some ways to
disable buffering if you want:
> 
> - Python (disable with `python -u`, or `PYTHONUNBUFFERED=1`, or
`sys.stdout.reconfigure(line_buffering=False)`, or `print(x,
flush=True)`)
> 
> _--
https://jvns.ca/blog/2024/11/29/why-pipes-get-stuck-buffering/#programming-languages-where-the-default-print-statement-buffers_

2025-05-13 10:40:49 -05:00

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