Returns if a request has an okay error code, otherwise raises InvalidRequest.

def checkResponse(request):
        '''
        Returns if a request has an okay error code, otherwise raises InvalidRequest.
        '''

        # Check the status code of the returned request
        if str(request.status_code)[0] not in ['2', '3']:
            w = str(request.text).split('\\r')[0][2:]
            raise InvalidRequest(w)
        return