Get Python Requirements Package Hashes

By  on  

Python's (pip's) requirements.txt file is the equivalent to package.json in the JavaScript / Node.js world.  This requirements.txt file isn't as pretty as package.json but it not only defines a version but goes a step further, providing a sha hash to compare against to ensure package integrity:

Flask==0.12.1 \
    --hash=sha256:6c3130c8927109a08225993e4e503de4ac4f2678678ae211b33b519c622a7242
Jinja2==2.9.6 \
    --hash=sha256:2231bace0dfd8d2bf1e5d7e41239c06c9e0ded46e70cc1094a0aa64b0afeb054
MarkupSafe==1.0 \
    --hash=sha256:a6be69091dac236ea9c6bc7d012beab42010fa914c459791d627dad4910eb665

....

Coming from the JavaScript / package.json world, you only need to provide the package name and version.  To get the hash of a python package, you can use hashin.  The first step is installing hashin:

pip install hashin

Once hashin is installed, you can get the package hash easily:

hashin Flask==0.12.1

The code above adds the package name, version, and available hashes to your requirements.txt file automatically.  Unfortunately I'm not aware of a method for recursive hashin checks, so if a package dependency doesn't use hashes, you'll need to run hashin for each of those packages manually.

Recent Features

  • By
    Designing for Simplicity

    Before we get started, it's worth me spending a brief moment introducing myself to you. My name is Mark (or @integralist if Twitter happens to be your communication tool of choice) and I currently work for BBC News in London England as a principal engineer/tech...

  • By
    Responsive Images: The Ultimate Guide

    Chances are that any Web designers using our Ghostlab browser testing app, which allows seamless testing across all devices simultaneously, will have worked with responsive design in some shape or form. And as today's websites and devices become ever more varied, a plethora of responsive images...

Incredible Demos

  • By
    Retrieve Your Gmail Emails Using PHP and IMAP

    Grabbing emails from your Gmail account using PHP is probably easier than you think. Armed with PHP and its IMAP extension, you can retrieve emails from your Gmail account in no time! Just for fun, I'll be using the MooTools Fx.Accordion plugin...

  • By
    Generate Dojo GFX Drawings from SVG Files

    One of the most awesome parts of the Dojo / Dijit / DojoX family is the amazing GFX library.  GFX lives within the dojox.gfx namespace and provides the foundation of Dojo's charting, drawing, and sketch libraries.  GFX allows you to create vector graphics (SVG, VML...

Discussion

  1. I think in your second snippet you mean hashin Flask==0.12.1.

    Also, hashin works by just specifying the package name. It’ll then install the latest version. E.g. hashin Flask.

  2. Check out for getting both recursive checks and hashes.

  3. F Fouvry

    pip-compile (from pip-tools) can generate hashes in a requirements file, using the option --generate-hashes.

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