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
    Dynamically Load Stylesheets Using MooTools 1.2

    Theming has become a big part of the Web 2.0 revolution. Luckily, so too has a higher regard for semantics and CSS standards. If you build your pages using good XHTML code, changing a CSS file can make your website look completely different.

  • By
    9 Incredible CodePen Demos

    CodePen is a treasure trove of incredible demos harnessing the power of client side languages.   The client side is always limited by what browsers provide us but the creativity and cleverness of developers always pushes the boundaries of what we think the front end can do.  Thanks to CSS...

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!