指定题号编译pdf功能中用完数据库后关闭

工具v4/指定题号编译pdf.py

@@ -138,6 +138,7 @@ class MyWindow_xtby(QWidget,Ui_Form):
         mydb = connect(hostname = db_host, port = db_port, username=db_user, pwd=db_pwd, db = self.database_name)
         mycursor = mydb.cursor()
         pro_dict,obj_dict,bn_dict,unit_obj_dict = generateDictsfromMariaDB(mycursor)
+        mydb.close()
         for p,IDs in self.TitleID_list:
             currentbodystring = f"\\section{{{p}}}\n\\begin{{enumerate}}\n\n"
             print(f"正在从数据库获取数据, 生成源代码...")