Entry

Fully qualified hostname

Jul 5th, 2000 10:00
Nathan Wallace, Hans Nowak, Snippet 137, Jonathan Giddy

"""
Packages: networking.sockets
"""
"""
>> >What is the best way to get the fully qualified hostname in python (ie
>> >hostname.domainname) ?
>> >
>> >A portable solution would be ideal, but I would settle for Unix only.
Under Unix, I get the best (i.e. least surprising) results using the 
following gethostname function:
"""
import socket
def getdnsnames(name):
    d = socket.gethostbyaddr(name)
    names = [ d[0] ] + d[1] + d[2]
    return names
def resolve(name):
    names = getdnsnames(name)
    for dnsname in names:
        if '.' in dnsname:
            fullname = dnsname
            break
    else:
        fullname = name
    return fullname
def gethostname():
    fullname = socket.gethostname()
    if '.' not in fullname:
        fullname = resolve(fullname)
    return fullname