How to sql scripts in a file?

I have a need to execute sql scripts in a file with comments in Python 2.7. 

here is m code snippet:

cur.execute(sql_file_contents)

 

the file can be executed from pgAdmin successfully. However, the code above runs quietly without any issues raised but NO results was worked out.

In the sql file, there are scripts to DROP FUNCTION  IF EXISTS and CREATE OR REPLACE FUNCTION.

Your input to shed light on it would be much appreciated.

Thank you