Get a Python Package Version

By  on  

Part of maintaining a Django-based application like MDN's kuma is ensuring Python packages are up to date.  I was recently testing an upgrade on a remote system and needed to ensure that a given Python package was at the version number it should be.  Here's how I retrieved the package version:

import nose   # Nose is a test utility.  Replace with your desired package here.
nose.__version__

# Output:  0.3.1

The __version__ property returns the exact version number for a Python package.  Some Python packages use a VERSION property as well, but __version__ should be the most reliable.

Recent Features

Incredible Demos

  • By
    Pure CSS Slide Up and Slide Down

    If I can avoid using JavaScript for element animations, I'm incredibly happy and driven to do so.  They're more efficient, don't require a JavaScript framework to manage steps, and they're more elegant.  One effect that is difficult to nail down with pure CSS is sliding up...

  • By
    Comment Preview Using MooTools

    Comment previewing is an awesome addition to any blog. I've seen really simple comment previewing and some really complex comment previewing. The following is a tutorial on creating very basic comment previewing using MooTools. The XHTML You can set up your XHTML any way you'd like.

Discussion

  1. Every once in a while a package might not define either VERSION or __version__, since they’re conventions, not required. You can always get the installed version with pkg_resources, though:

    >>> import pkg_resources
    >>> pkg_resources.get_distribution("PIL").version
    '1.1.7'
    
  2. Alfred Tarski

    @James, __version__ is recommended by PEP 396

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!