install cairo with bower code example
Example: lib cairo win64 installation
pip install https://download.lfd.uci.edu/pythonlibs/gjr6o2id/pycairo-1.15.4-cp36-cp36m-win_amd64.whl
pip install https://download.lfd.uci.edu/pythonlibs/gjr6o2id/pycairo-1.15.4-cp36-cp36m-win_amd64.whl