[issue16580] [doc] Add examples to int.to_bytes and int.from_bytes

[Gautam Chaudhuri]

Change by Gautam Chaudhuri <gautam.chaudhuri.1803 at gmail.com>:


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pull_requests: +26236
stage: needs patch -> patch review
pull_request: https://github.com/python/cpython/pull/27760

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<https://bugs.python.org/issue16580>
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