#!/usr/bin/env python

import os

def experiment():
    """
    Return the name of the local machine. Tries a number of methods
    to get a name other than 'localhost'.
    """
    import socket
    import platform

    print("Test of $HOSTNAME")
    name = os.getenv('HOSTNAME')
    if name == None :
        print('Result of os.getenv is None')
    print(name)
    print()
    
    print("Test of platform.uname()[1]")
    name = platform.uname()[1]
    print(name)
    print()   

    print("Test of name=socket.gethostname()")
    if socket.gethostname().find('.')>=0:
        name=socket.gethostname()    
    print(name)
    print()  

    print("Test of socket.gethostbyaddr(socket.gethostname())[0]")
    name=socket.gethostbyaddr(socket.gethostname())[0]
    print(name)
    print() 

    return name

def LocalHostname():
    """
    Return the name of the local machine. Tries a number of methods
    to get a name other than 'localhost' or a null result.
    """
    import socket
    import platform

    def CheckName(name) :
        if name == None or name.startswith("localhost") or name == "" :
            OKAY = False
        else :
            OKAY = True
        return OKAY

    name = os.getenv('HOSTNAME') 

    if not CheckName(name) :
        name = platform.uname()[1]

    if not CheckName(name) :
        if socket.gethostname().find('.')>=0:
            name=socket.gethostname()
        else:
            name=socket.gethostbyaddr(socket.gethostname())[0]

    return name
 

print(LocalHostname())