Manage Pythons

The real benefits of SNAFU shows when you install more than one Python versions. Instead of manipulating the PATH environment variable, simply run the command with the appropriate version name.

# Python 3.6 (64-bit on available hosts, 32-bit otherwise).
snafu install 3.6

# Python 3.5 (force 32-bit).
snafu install 3.5-32

# Python 2.7.
snafu install 2.7

No more python.exe shadowing because you have multiple versions in PATH.

Use Versions

When you have multiple Python versions installed, SNAFU only exposes the above two executables by default. If you want to expose other commands of a given Python version, You can tell SNAFU to use it: [1]

snafu use 3.6
[1]SNAFU does this automatically when you install your first ever Python version. This is why we had access to python3 without using 3.6 in Install Python.

So SNAFU publishes (almost) all commands available in Python 3.6, including

  • python3.exe
  • pip3.exe
  • easy_install-3.6.exe
  • All other scripts you installed via pip install.

As an exception, SNAFU blacklists python.exe, pip.exe, and easy_install.exe from being published, to encourage the best practice of always using versioned Python and Pip commands.

You can use multiple versions together to expose scripts installed across them:

snafu use 3.6 2.7

This exposes commands from both Python 3.6 and 2.7, with 3.6 taking precedence, i.e. if a given command exists in both versions, the 3.6 one will be called.

Manage Used Versions

To see what versions are currently in use:

snafu use

To reset using state (i.e. unuse all versions):

snafu use --reset