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Date: Mon, 09 Jan 2012 14:35:42 -0800
From: Dominic Binks <dbinks@codeaurora.org>
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Subject: Re: socket.gethostbyaddr( os.environ['REMOTE_ADDR'] error
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On 1/9/2012 2:19 PM, Νικόλαος Κούρας wrote:
> Can you please explain me what the [0] in host =
> socket.gethostbyaddr( os.environ['REMOTE_ADDR'] )[0] does at the end?
>
> Why not just host = socket.gethostbyaddr( os.environ['REMOTE_ADDR'] )
> instead? what is the need of [0] ?

The address database can have multiple names for the same IP address so 
gethostbyaddr returns a list - [0] being the first item in the list (and 
usually considered the canonical name)

-- 
Dominic Binks: dbinks@codeaurora.org
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum