Check python packages from requirement.txt and report issues
Python License Checker
Check python packages listed in a requirements.txt file and report license issues.
You can define a list of authorized licenses, unauthorized licenses and authorized packages.
The tool will check the requirements.txt file, check packages and their dependencies and return an error if some packages are not compliant against the given strategy.
A package is considered as not compliant when its license is in the unauthorized license list or is unknown. A package is considered as compliant when its license is in authorized license list, or if the package is in the list of authorized packages.
How to install
$ pip install liccheck
How to use
liccheck will read the requirements.txt and verify compliance of packages against a strategy defined in the ini file. If the file is not specified on command line, it will search for requirements.txt in the current folder. You have to setup an ini file with an authorized license list, unauthorized license list and authorized package list.
Here is an example of a strategy.ini file:
# Authorized and unauthorized licenses in LOWER CASE [Licenses] authorized_licenses: bsd new bsd bsd license new bsd license simplified bsd apache apache 2.0 apache software license gnu lgpl lgpl with exceptions or zpl isc license isc license (iscl) mit mit license python software foundation license zpl 2.1 unauthorized_licenses: gpl v3 [Authorized Packages] # Python software license (see http://zesty.ca/python/uuid.README.txt) uuid: 1.30
For demo purpose, let’s say your requirements.txt file contains this:
Flask>=0.12.1 flask_restful jsonify psycopg2>=2.7.1 nose scipy scikit-learn pandas numpy argparse uuid sqlbuilder proboscis pyyaml>=3.12
The execution will output this:
$ liccheck -s my_strategy.ini -r my_project/required.txt gathering licenses...23 packages and dependencies. check forbidden packages based on licenses...none check authorized packages based on licenses...19 packages. check authorized packages...4 packages. check unknown licenses...none
If some dependencies are unknown or are not matching the strategy, the output will be something like:
$ liccheck -s my_strategy.ini -r my_project/requirements.txt gathering licenses...32 packages and dependencies. check forbidden packages based on licenses...1 forbidden packages : Unidecode (0.4.21) : GPL ['GNU General Public License v2 or later (GPLv2+)'] dependencye(s): Unidecode << python-slugify << yoyo-migrations check authorized packages based on licenses...24 packages. check authorized packages...6 packages. check unknown licenses...1 unknown packages : feedparser (5.2.1) : UNKNOWN  dependencye(s): feedparser
- See LICENSE