Get username

[DeaD_EyE]

The module os can help you.

deadeye@nexus ~ $ import os                                   
deadeye@nexus ~ $ os.getuid()                                 
1000
deadeye@nexus ~ $ os.getlogin()                               
'deadeye'
deadeye@nexus ~ $

Don't worry, it's not inside a Python REPL, it's XONSH.