Emacs: How do I set flycheck to Python 3?

Question

I\'ve installed flycheck for Emacs Python on Ubuntu 15.04.

However, when using the tool it reports false positives like print(item, end=\' \') is wrong synt

Answer 1

For my case (no pipenv), I got it working by installing the checkers into python3:

$ pip3 install flake8 pylint mypy

And adding the following to my ~/.emacs.c/custom.el so Flycheck uses python3 for the checkers:

(custom-set-variables
 '(flycheck-python-flake8-executable "python3")
 '(flycheck-python-pycompile-executable "python3")
 '(flycheck-python-pylint-executable "python3"))

As @uwe-koloska noted, using Ctrl-c ! v to call flycheck-verify-setup is very helpful!