fix python exception issues

Author: lohanidamodar

templates/python/package/client.py.twig

@@ -86,8 +86,8 @@ class Client:
 
             return response._content
         except Exception as e:
-            if e.response:
-                raise {{spec.title | caseUcfirst}}Exception(e.response.json()['message'], e.response.status_code, e.response.json())
+            if response.json():
+                raise {{spec.title | caseUcfirst}}Exception(response.json()['message'], response.status_code, response.json())
             else:
                 raise {{spec.title | caseUcfirst}}Exception(e)
 

templates/python/package/exception.py.twig

@@ -1,5 +1,5 @@
 class {{spec.title | caseUcfirst}}Exception(Exception):
-    def __init__(self, message, code, response):
+    def __init__(self, message, code = 0, response = None):
         self.message = message
         self.code = code
         self.response = response