Question

在Mac OS上使用Python 3.4，mysql。已经安装了mysql，pymysql，mysqlclient-python

des1 = TEMP_FAILURE_RETRY(mq_open(name1, O_RDWR | O_CREAT | O_NONBLOCK, 0666, &attr));
if (des1 < 0)

不确定还需要什么，所以它知道＆＃34; .execute＆＃34;

Answer 1

在Python中，您call functions为()提供标识符。喜欢这个：

cur = connection.cursor()

这是语法：

call                 ::=  primary "(" [argument_list [","]
                          | expression genexpr_for] ")"
argument_list        ::=  positional_arguments ["," keyword_arguments]
                            ["," "*" expression] ["," keyword_arguments]
                            ["," "**" expression]
                          | keyword_arguments ["," "*" expression]
                            ["," "**" expression]
                          | "*" expression ["," keyword_arguments] ["," "**" expression]
                          | "**" expression
positional_arguments ::=  expression ("," expression)*
keyword_arguments    ::=  keyword_item ("," keyword_item)*
keyword_item         ::=  identifier "=" expression

Answer 2

您需要将Connection设置为Cursor方法

cur = connection.cursor()

创建时，使用cursor()方法创建execute()。 Cursor只是您将cursor别名设置为。

你可以写，如果你想：

Cursor = cursor()
cur = connection.Cursor

来自MySQL Cursor Class：

要创建游标，请使用连接对象的cursor（）方法：

import mysql.connector

cnx = mysql.connector.connect(database='world')
cursor = cnx.cursor()

错误：功能＆＃39;对象没有属性＆＃39;执行＆＃39;

2 个答案: