Message 107886 - Python tracker
+1 for replacing math range notation with English. Much easier for non-math people that do Python :)
One more nit: Your docstrings use verb forms like “Returns” where PEP 257 advises to use “Return”: “[the docstring] prescribes the function or method's effect as a command ("Do this", "Return that"), not as a description; e.g. don't write "Returns the pathname ..."”