So, I downloaded the .zip with the source files, then download and installed Python 2.7.12 and launched sqlmap.py and got the error that says:
sqlmap.py: error: missing a mandatory option (-d, -u, -l, -m, -r, -g, -c, -x, -- wizard, --update, --purge-output or --dependencies), use -h for basic or -hh for advanced help
then I press "Enter" and it closes