python：检查主机名是否已解析

您可以

socket.gethostbyname()

>>> 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 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