python: check if a hostname is resolved
You can use socket.gethostbyname() for this:
>>> import socket>>> socket.gethostbyname('google.com')'74.125.224.198'>>> socket.gethostbyname('foo') # no host 'foo' exists on the networkTraceback (most recent call last): File "<stdin>", line 1, in <module>socket.gaierror: [Errno 8] nodename nor servname provided, or not knownYour function might look like this:
def hostname_resolves(hostname): try: socket.gethostbyname(hostname) return 1 except socket.error: return 0Example:
>>> hostname_resolves('google.com')1>>> hostname_resolves('foo')0