python根据ip地址反向查找主机名称
import sys, socket
try:
result = socket.gethostbyaddr("66.249.71.15")
print "Primary hostname:"
print " " + result[0]
# Display the list of available addresses that is also returned
print "\nAddresses:"
for item in result[2]:
print " " + item
except socket.herror, e:
print "Couldn't look up name:", e
上面的代码执行后返回：
Primary hostname: crawl-66-249-71-15.googlebot.com Addresses: 66.249.71.15
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