In addition to the libraries discussed on the linked page, have a look at Shapely: https://pypi.python.org/pypi/Shapely https://pypi.python.org/pypi/Shapely if

In addition to the libraries discussed on the linked page, have a look at Shapely: https://pypi.python.org/pypi/Shapely https://pypi.python.org/pypi/Shapely if you're not already aware of it. It's GIS-oriented, but in practice, it can be very useful even if you're not strictly dealing with geospatial data.