Update post_operation.py

Author: shriram192

servicex_codegen/post_operation.py

@@ -92,7 +92,9 @@ def post(self):
                 zip_data = self.stream_generated_code(generated_code_result)
                 # code gen transformer returns the default transformer image mentioned in
                 # the config file
-                transformer_image = os.environ.get("TRANSFORMER_SCIENCE_IMAGE")
+                transformer_image = os.environ.get('TRANSFORMER_SCIENCE_IMAGE')
+                print(transformer_image)
+                print(os.environ['TRANSFORMER_SCIENCE_IMAGE'])
 
                 # MultipartEncoder library takes multiple types of data fields and merge
                 # them into a multipart mime data type