您可以socket.gethostbyname()为此使用：
>>> import socket
>>> socket.gethostbyname('google.com')
'74.125.224.198'
>>> socket.gethostbyname('foo') # no host 'foo' exists on the network
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
socket.gaierror: [Errno 8] nodename nor servname provided, or not kNown
您的函数可能如下所示：
def hostname_resolves(hostname):
try:
socket.gethostbyname(hostname)
return 1
except socket.error:
return 0
例：
>>> hostname_resolves('google.com')
1
>>> hostname_resolves('foo')
0
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