make the DBConnector class usable as a standalone object or in a context manager

database.py

@@ -1,3 +1,6 @@
+"""This module contains functionality for interacting with a PostgreSQL database. It will automatically handle error
+conditions (i.e. missing columns) without terminating the entire program. Use the :py:class:`DBConnector` class to
+handle database interactions, either as a standalone object or in a context manager."""
 import os
 import psycopg2
 
@@ -17,14 +20,27 @@ class DBConnector:
        with DBConnector() as db:
            db.read()
     """
-    def __enter__(self):
-        self.conn = psycopg2.connect()
+    def _db_start(self):
+        self.conn = psycopg2.connect(
+            f"host={DB_ADDRESS} port={DB_PORT} dbname={DB_NAME} user={DB_USER} password={DB_PASSWORD}")
         self.cur = self.conn.cursor()
 
-    def __exit__(self):
+    def _db_stop(self):
         self.cur.close()
         self.conn.close()
 
+    def __init__(self):
+        self._db_start()
+
+    def __del__(self):
+        self._db_stop()
+
+    def __enter__(self):
+        self._db_start()
+
+    def __exit__(self):
+        self._db_stop()
+
     def _query(self, sql):
         try:
             self.cur.execute(sql)