How to read a file from another server? Newbie

[Sean Berry]

I am trying to read in a file from another server.

If I try 
x = open("servername:/path/to/file", "r")

I get the following error:
IOError: [Errno 2] No such file or directory: 'servername:/path/to/file'


Sorry for the easy question, but couldn't find anything on google.

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