Currently there are no _"pythonrequires" in setup.py so it is possible to install
this package on un-supported python version (for example on python 2.7 as I did).
Also I noticed that on PYPI page supported python versions starts from "Python :: 3.5" but there are f-strings used in code, which were added in python 3.6 (PEP 498), so supported python version should start from python 3.6.
Currently there are no _"pythonrequires" in setup.py so it is possible to install this package on un-supported python version (for example on python 2.7 as I did).
Also I noticed that on PYPI page supported python versions starts from "Python :: 3.5" but there are f-strings used in code, which were added in python 3.6 (PEP 498), so supported python version should start from python 3.6.