fix QuantifyingException handling issue

Author: naishasinha

scripts/shared.py

@@ -11,9 +11,10 @@
 
 
 class QuantifyingException(Exception):
-    def __init__(self, message, exit_code):
-        super().__init__(message)
-        self.exit_code = exit_code
+    def __init__(self, message, exit_code=None):
+        self.exit_code = exit_code if exit_code else 1
+        self.message = message
+        super().__init__(self.message)
 
 
 def setup(current_file):