Ultra-lightweight pure Python package to check if a file is binary or text.
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Latest commit 16d9702 Aug 8, 2017 @pydanny pydanny committed on GitHub Merge pull request #37 from theodesp/Issue-36
Fixed-#36 - Updated requirements_dev.txt: Added hypothesis



https://img.shields.io/pypi/v/binaryornot.svg?style=flat Documentation Status Updates

Ultra-lightweight pure Python package to guess whether a file is binary or text, using a heuristic similar to Perl's pp_fttext and its analysis by @eliben.


It works, and people are using this package in various places. But it doesn't cover all edge cases yet.

The code could be improved. Pull requests welcome! As of now, it is based on these snippets, but that may change:


Has tests for these file types:

  • Text: .txt, .css, .json, .svg, .js, .lua, .pl, .rst
  • Binary: .png, .gif, .jpg, .tiff, .bmp, .DS_Store, .eot, .otf, .ttf, .woff, .rgb

Has tests for numerous encodings.


You may be thinking, "I can write this in 2 lines of code?!"

It's actually not that easy. Here's a great article about how Perl's heuristic to guess file types works: http://eli.thegreenplace.net/2011/10/19/perls-guess-if-file-is-text-or-binary-implemented-in-python/

And that's just where we started. Over time, we've found more edge cases and our heuristic has gotten more complex.

Also, this package saves you from having to write and thoroughly test your code with all sorts of weird file types and encodings, cross-platform.


Linux (Ubuntu 12.04 LTS Server Edition 64 bit):

Windows (Windows Server 2012 R2 (x64)):