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Details on multiple Python2 and Python3 versions.

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Add detail regarding activating multiple Python2 and Python3 versions simultaneously.
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Nathan Henrie 2015-04-17 16:59:04 -06:00
parent 71c9ff565b
commit 17c153b1c1
1 changed files with 10 additions and 3 deletions
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README.md
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@ -126,9 +126,16 @@ reading it from the following sources, in this order:
Python. (In other words, whatever version would run if pyenv weren't in your
`PATH`.)
**NOTE:** You can activate multiple versions at the same time, e.g. `pyenv
global 3.4.2 2.7.8`. This allows for parallel usage of python2 and python3,
and is required with tools like `tox`.
**NOTE:** You can activate multiple versions at the same time, including mulitple
versions of Python2 or Python3 simultaneously. This allows for parallel usage of
Python2 and Python3, and is required with tools like `tox`. For example, to set
your path to first use your `system` Python and Python3 (set to 2.7.9 and 3.4.2
in this example), but also have Python 3.3.6, 3.2, and 2.5 available on your
`PATH`, one would first `pyenv install` the missing versions, then set `pyenv
global system 3.3.6 3.2 2.5`. At this point, one should be able to find the full
executable path to each of these using `pyenv which`, e.g. `pyenv which python2.5`
(should display `$PYENV_ROOT/versions/2.5/bin/python2.5`), or `pyenv which
python3.4` (should display path to system Python3).
### Locating the Python Installation