The import socket statement imports one of Python's core networking libraries. Then, we use the two utility functions, gethostname() and gethostbyname(host_name). You can type help(socket.gethostname) to see the online help information from within the command line. Alternatively, you can type the following address in your web browser at http://docs.python.org/3/library/socket.html. You can refer to the following code:

    gethostname(...)
        gethostname() -> string 
        Return the current host name. 
    
    gethostbyname(...) 
        gethostbyname(host) -> address 
        Return the IP address (a string of the form 
        '255.255.255.255') for a host.

The first function takes no parameter and returns the current or localhost name. The second function takes a single hostname parameter and returns its IP address.