Feature/create client

yes, you can say something like this: 
    requests.codes.internal_server_error , that returns 500

So I could do soemthing like this:
             http_error_codes = [
                    requests.codes.conflict, # 409
                    requests.codes.internal_server_error, # 500
                    requests.codes.bad_gateway, # 502
                    requests.codes.service_unavailable, # 503
                    requests.codes.gateway_timeout # 504
                ]