Guys and nerds, let me explain you something here, wlan_XX networks are the default name of wifi networks used by movistar, formerly known as telefonica, in Spain. The default passwords consist of 13 digits, and 9 of them are for everybody to see. There are tools to get the remaining 4 digits of the password in a few minutes with a few steps, this script i guess is automating all the process.
Regarding the repositories i believe they have nothing to do with the creator of the script, so you better contact them directly.
Key points:

1. Only to use in Spain
2. The guy who did the script =! the owner of the repository.