O_EXCL Ensure that this call creates the file: if this flag is specified in conjunction with O_CREAT, and pathname already exists, then open() will fail. When these two flags are specified, symbolic links are not followed: if pathname is a symbolic link, then open() fails regardless of ...
mysql = MYSQL() flag = mysql.connectDB() read_sql() table_name ='sheet' sql ="sql" output_path="filename" ifflag == -1: print('数据库连接失败') else: print('数据库连接成功') try: mysql.export(table_name,sql,output_path) except Exceptionasmsg: print(msg) break print('sql执行完...