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I am using the default python.el python-mode for my Python development in Emacs. When I run the command python-shell-send-buffer with C-c C-c, it prompts me by default with:

Run Python: /usr/bin/python -i

I would like this to default to /usr/bin/python3 without the -i option. Is there a variable where I can set for the path that shows up for the python-shell-send-buffer command? I have looked through the completions for python-shell- but couldn't find what I am looking for. Thank you!

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  • This don't work. When you type C-c C-c, Emacs still use Python2 interpreter. Commented Feb 26, 2017 at 12:16

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python-shell-interpreter is a variable defined in python.el. Its [default] value is "python".

Documentation: Default Python interpreter for shell.

You can customize this variable.

python-shell-interpreter-args is a variable defined in python.el. Its [default] value is "-i".

Documentation:  Default arguments for the Python interpreter.

You can customize this variable.
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