This is the core library that implements functionality of https://github.com/bkabrda/anymarkup. You can install this if you only want to use a subset of anymarkup parsers. For example, you can do this:
$ pip install anymarkup-core PyYAML
$ python -c "import anymarkup_core; print(anymarkup_core.parse('foo: bar'))"
... and you don't need xmltodict installed, for example. You can use anymarkup-core in the same way you use anymarkup, except you have to import from anymarkup_core, obviously.