pyenv-change the python version of virtualenv


When I first played with Heroku, the runtime for python was 2.7.8, so I just wrote python-2.7.8 in runtime.txt. Recently, 2.7.9 can be used for python2.x series, so I would like to upgrade the heroku app to 2.7.9.

The python environment is managed using pyenv-virtualenv.

First thing to do

Run pyenv install 2.7.9 to put python-2.7.9 into pyenv management.

What to do in each project


It's not particularly difficult, but you may be worried about a compile timeout in the case of a large package such as matplotlib.

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