Trying to find which method isn't closing its sql connection properly

cdplib/db_handlers/SQLHandler.py

@@ -19,14 +19,12 @@ from cdplib.log import Log
 from cdplib.Singleton_Threadsafe import SingletonThreadsafe
 
 class SQLHandlerPool(metaclass=SingletonThreadsafe):
-#class SQLHandlerPool():
     '''
     '''
 
     def __init__(self, size: int = 20):
         self._size = size
         self._log = Log(name='SQLHandlerPool')
-        self._log.info('############################# CREATED NEW POOL ###################################')
         self._sql_handlers = [SQLHandler() for _ in range(size)]
 
     def aquire(self):
@@ -502,8 +500,7 @@ class SQLHandler:
         :rtype: DataFrame
         '''
         try:
-            self._log.info('THIS SHOULD BE A SQL CALL')
-            '''
+            
             connection = self._engine.connect()
 
             data = pd.read_sql(sql=query,
@@ -513,7 +510,7 @@ class SQLHandler:
             connection.close()
            
             return data
-            '''
+
         except Exception as e:
             err = ("Could not read the query to a dataframe. "
                    "Finished with error {}").format(e)
@@ -632,3 +629,6 @@ class SQLHandler:
                             diagram_path,
                             schema=schema,
                             include_tables=include_tables)
+
+    def dispose_engine(self):
+        self._engine.dispose()