How do I detect whether sys.stdout is attached to terminal or not?

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Chapters
00:00 How Do I Detect Whether Sys.Stdout Is Attached To Terminal Or Not?
00:31 Accepted Answer Score 295
00:53 Thank you

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Full question
https://stackoverflow.com/questions/1077...

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Tags
#python #console #terminal

#avk47

ACCEPTED ANSWER

Score 295

This can be detected using isatty:

if sys.stdout.isatty():
    # You're running in a real terminal
else:
    # You're being piped or redirected

To demonstrate this in a shell:

python -c "import sys; print(sys.stdout.isatty())" should write True
python -c "import sys; print(sys.stdout.isatty())" | cat should write False