commit message from python script

my_movies/create_db.sql

@@ -1,5 +1,5 @@
     CREATE TABLE IF NOT EXISTS eggs(
-                            cooler_typ TEXT,
+                            cooler_typ TEXT PRIMARY KEY,
                             glückszahl INTEGER
                             );
                             

my_movies/database.py

@@ -24,14 +24,15 @@ class db_work:
             cursor = con_db.cursor()
             fd = open(self.script_folder + os.sep + "add_value.sql", "r")
             sql_code = fd.read().format(coolertype=cooler_typ,eine_zahl=glueckszahl)
-            #sql_code =  '''
-            #               INSERT INTO eggs (cooler_typ, glückszahl)
-            #               VALUES('{coolertype}', {eine_zahl});
-            #            '''.format(coolertype=cooler_typ,eine_zahl=glueckszahl)
-
-            cursor.execute(sql_code)
+            
+            try:
+                cursor.execute(sql_code)
+            except sqlite3.IntegrityError:
+                return False            
+            
             con_db.commit()
-    
+            return True
+        
     def show_value(self):
         with sqlite3.connect(self.db_file) as con_db:
             cursor = con_db.cursor()
@@ -48,5 +49,6 @@ if __name__ == "__main__":
     db_file_full = script_folder + os.sep + "spam.db"
     my_db = db_work(db_file=db_file_full)
     my_db.create_db()
-    my_db.add_value_db(cooler_typ="daniel-3", glueckszahl=42)
+    add_value_to_db = my_db.add_value_db(cooler_typ="daniel-5", glueckszahl=42)
+    print (add_value_to_db)
     print(my_db.show_value())