Switch to last-return exception checking

Author: jeffreylovitz

redisgraph/query_result.py

@@ -1,6 +1,7 @@
 from .node import Node
 from .edge import Edge
 from prettytable import PrettyTable
+from redis import ResponseError
 
 
 class ResultSetColumnTypes(object):
@@ -35,6 +36,10 @@ def __init__(self, graph, response):
         self.header = []
         self.result_set = []
 
+        # If we encountered a run-time error, the last response element will be an exception.
+        if isinstance(response[-1], ResponseError):
+            raise response[-1]
+
         if len(response) is 1:
             self.parse_statistics(response[0])
         else: