新增requirements.txt;删除硬编码信息

postgresql_info.py

@@ -3,11 +3,11 @@ import os
 
 load_dotenv()
 
-pg_name = os.getenv("DB_NAME") or "TJWater"
-pg_host = os.getenv("DB_HOST") or "127.0.0.1"
-pg_port = os.getenv("DB_PORT") or "5432"
-pg_user = os.getenv("DB_USER") or "tjwater"
-pg_password = os.getenv("DB_PASSWORD") or "Tjwater@123456"
+pg_name = os.getenv("DB_NAME")
+pg_host = os.getenv("DB_HOST")
+pg_port = os.getenv("DB_PORT")
+pg_user = os.getenv("DB_USER")
+pg_password = os.getenv("DB_PASSWORD")
 
 
 def get_pgconn_string(