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URL matching rules library to connect URLs with resources

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URL matching library that relates URLs with resources. Rules are defined using simple pattern definitions. It is simpler and faster than using regular expressions if the rules involves many domains.

To illustrate it with an example, imagine that you have several proxy servers and you want to route requests to the right one. You could define the following rules:

  • →︎ us_proxy

  • →︎ uk_proxy

  • →︎ ie_proxy

All URLs from should use the US proxy. The situation for URLs are different: if the path starts with /uk, then use the UK proxy, otherwise use the IE proxy. This library allows to create a matcher that can be used to match URLs with the right proxy using these rules.

Have a look to for an example of usage.

The following files are useful to understand the pattern, the set of patterns and how they behave:

The full documentation can be found at

License is BSD 3-clause.


Setup your local Python environment via:

  1. pip install -r requirements-dev.txt

  2. pre-commit install

Now everytime you perform a git commit, these tools will run against the staged files:

  • black

  • isort

  • flake8

  • mypy

You can also directly invoke pre-commit run --all-files to run them without performing a commit.

Using sphinx-autobuild

When working on documentation, it is convenient to use sphinx-autobuild. First, run pip install -r docs/requirements.txt sphinx-autobuild. Then run

sphinx-autobuild docs docs/_build/html

and then open in a browser, to see the current version of docs. A process would be running in a background, watching for docs changes; when docs are changed, a build is started, and the web page is refreshed automatically when the build is finished.

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