20 ms·

yes and it took me a while to fix things. I still need to maintain my python2 code

• profunctor 8y ago
  Doesn't OSX come with python2 by default?
  • rplnt 8y ago
    It does, what can break is what `python` points to.
    • osteele 8y ago
      This is un-broken as of 2018-03-09[1,2,3]. `brew install python` installs python3, but it only installs a link to this at `/usr/local/bin/python3`, not `/usr/local/bin/python` (as it did for a while). In other words, `brew install python` now complies with PEP 394[4]. $ brew install python … ==> Caveats Python has been installed as /usr/local/bin/python3 Unversioned symlinks `python`, `python-config`, `pip` etc. pointing to `python3`, `python3-config`, `pip3` etc., respectively, have been installed into /usr/local/opt/python/libexec/bin … $ ls -l /usr/local/bin/python{,2,3} lrwxr-xr-x 1 osteele staff 38 Mar 22 11:23 /usr/local/bin/python -> ../Cellar/python@2/2.7.14_3/bin/python lrwxr-xr-x 1 osteele staff 39 Mar 22 11:23 /usr/local/bin/python2 -> ../Cellar/python@2/2.7.14_3/bin/python2 lrwxr-xr-x 1 osteele staff 34 Mar 31 12:27 /usr/local/bin/python3 -> ../Cellar/python/3.6.5/bin/python3 [1] https://brew.sh/2018/04/09/homebrew-1.6.0/ https://brew.sh/2018/04/09/homebrew-1.6.0/ [2] https://github.com/Homebrew/homebrew-core/issues/24812 https://github.com/Homebrew/homebrew-core/issues/24812 [3] https://discourse.brew.sh/t/python-and-pep-394/1813 https://discourse.brew.sh/t/python-and-pep-394/1813 [4] https://www.python.org/dev/peps/pep-0394/ https://www.python.org/dev/peps/pep-0394/
• kstrauser 8y ago
  pyenv is your friend. It manages the installation of multiple versions, and you can choose on a per-pipenv basis which one you want to use. A certain codebase requires 2.7.10, not 2.7.11? Pin it to 2.7.10 and it'll stay there forever, even if you upgrade the system or homebrew python.