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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_ip(request):
 """ Retrieves the remote IP address from the request data. If the user is behind a proxy, they may have a comma-separated list of IP addresses, so we need to account for that. In such a case, only the first IP in the list will be retrieved. Also, some hosts that use a proxy will put the REMOTE_ADDR into HTTP_X_FORWARDED_FOR. This will handle pulling back the IP from the proper place. **NOTE** This function was taken from django-tracking (MIT LICENSE) http://code.google.com/p/django-tracking/ """


    # if neither header contain a value, just use local loopback
    ip_address = request.META.get('HTTP_X_FORWARDED_FOR',
                                  request.META.get('REMOTE_ADDR', '127.0.0.1'))
    if ip_address:
        # make sure we have one and only one IP
        try:
            ip_address = IP_RE.match(ip_address)
            if ip_address:
                ip_address = ip_address.group(0)
            else:
                # no IP, probably from some dirty proxy or other device
                # throw in some bogus IP
                ip_address = '10.0.0.1'
        except IndexError:
            pass

    return ip_address