How to check potentially empty stdin without waiting for input?

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Track title: CC H Dvoks String Quartet No 12 Ame

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Chapters
00:00 Question
00:58 Accepted answer (Score 6)
05:02 Thank you

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Full question
https://stackoverflow.com/questions/2626...

Question links:
https://pypi.python.org/pypi/readchar/0....

Accepted answer links:
[O_NONBLOCK]: http://pubs.opengroup.org/onlinepubs/009...
[read]: http://pubs.opengroup.org/onlinepubs/009...
[os]: https://docs.python.org/3/library/os.htm...
[fcntl]: http://pubs.opengroup.org/onlinepubs/009...
[fcntl]: https://docs.python.org/3/library/fcntl....
[TextIOWrapper]: https://docs.python.org/3/library/io.htm...
[BufferedReader]: https://docs.python.org/3/library/io.htm...
[FileIO]: https://docs.python.org/3/library/io.htm...
[RawIOBase.read]: https://docs.python.org/3/library/io.htm...

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Tags
#python #io #buffer #stdin #stdio

#avk47