Re: Referrer key missing form os.environ dictionary?

[Ned Batchelder]

On 9/25/13 10:26 AM, John Gordon wrote:
You could try this:
     try:
         referer = os.environ.get('HTTP_REFERER', 'UnknownRef')
     except KeyError:
         referer = None

     if not referer:
         referer = 'UnknownRef'
There's no need for the "except KeyError" clause.  dict.get never raises 
KeyError, this code will assign 'UnknownRef' in the case the environment 
variable is missing.

--Ned.
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