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I need to write a program that retrieves the IP addresses of a list of domain names. The simple example can be shown here:

>>> import socket
>>> socket.gethostbyname('google.com')
'172.217.160.14'
>>> socket.close()

After I try to close the socket, I get this error:

Traceback (most recent call last): File "", line 1, in AttributeError: module 'socket' has no attribute 'close'

How can I close this socket? I need to close it because my actual program has loop where in each domain name in the list I needs to get its IP, so I need to close the socket in each iteration for the new host.

Can you tell me what is the problem?

user9371654
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2 Answers2

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You don't create a socket here neither you bind it to any port. What socket.gethostbyname('google.com') does is translate a host name to IPv4 address format. The method .close() has effect in open connections.

Marios Karatisoglou
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  • So is it safe to put it in a loop where I call it socket.gethostbyname(domain[i]) where I have a list of domain names? will this cause any confusion? – user9371654 Jul 31 '18 at 14:24
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The socket in your code refers to the socket module, which has no close function. A new module level close function has been added in Python 3.7, but it requires a socket descriptor as an argument. If I get it right, you want to call the close method of socket object, not the module. In your case you don't need to close any connection.

Vladimir Poghosyan
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