Gender Guesser

gender-guesser is a Python library that attempts to determine the gender of a person based on their first name. It's a Python port of a Java library and is currently at version 0.4.0. The library returns one of six possible values: 'unknown', 'andy' (androgynous), 'male', 'female', 'mostly_male', or 'mostly_female'. It appears to be actively maintained, with the latest release from late 2016.