> I was wondering, if there is a way to retrieve the referer url with
> python (web-based).
> I tried this:
>
> import os
> print os.getenv('HTTP_REFERER')
>
> but it's not working, even thought other http variables do function,
> this one is always a None.
This could be for any number of reasons, inter alia:
1) you don't specify the environment in which your python code is
running. this may not get stashed in the os.getenv(). In
Django, it's stashed in request.META.HTTP_REFERER; in CGI, it
should be in your os.getenv(); in WebStack, the trans parameter
has get_headers()/get_header_values() methods you can use to
extract the referer; and in other frameworks, they may toss them
elsewhere.
2) the browser is configured to protect the privacy of the
browser, and not send a Referer header
3) your server may not be configured to include the HTTP_REFERER
environment variable (improbable, but possible)
4) your user(s) are coming from a book-marked link where there is
no Referer to be sent
-tkc
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