AttributeError:使用mysql-connector插入数据时，"tuple"对象没有属性"encode" [英] AttributeError: 'tuple' object has no attribute 'encode' when inserting data using mysql-connector

问题描述

以下程序收集用户输入并将其存储，然后将数据保存到.csv/通过电子邮件发送给我，最后将数据插入MySQL数据库.

The below program collects the users inputs and stores them, it then saves that data to a .csv / emails it to me and finally inserts that data into a MySQL database.

我为此使用mysql.connector，但是出现错误:

I am using mysql.connector for this, however I am getting the error:

AttributeError: 'tuple' object has no attribute 'encode'

程序执行时.

这是代码，我认为问题与试图插入数据库的数据类型有关，但我不确定.

Here is the code, I think the problem is to do with the type of data trying to be inserted into the database, but I cannot be sure.

import mysql.connector

# ...

# Connect to MySQL Database and send user_input data to 'user' TABLE.
cnx = mysql.connector.connect(user='root', password='ash123', host='localhost', database='user_data_db')
cursor = cnx.cursor()

query = ("INSERT INTO user (user_id, first_name, last_name, age, postcode,  email_address)"
         "VALUES (%s, %s, %s, %s, %s, %s)", (user_id, firstname, lastname, age, postcode, email)) 

cursor.execute(query)
print("Executed Successfully")

cursor.close()
cnx.close()

推荐答案

除非是bytes或bytearray类型，否则cursor.execute期望第一个参数(SQL查询)具有encode方法. query是2元组，元组不具有该方法，并且尝试访问它失败，并显示AttributeError.

Unless it's of the bytes or bytearray type, cursor.execute expects the first argument (SQL query) to have the encode method. query is a 2-tuple, tuples do not have that method and attempts to access it fail with AttributeError.

您可以解压缩query以便将其元素用作cursor.execute的位置参数:

You can unpack query, in order to use its elements as positional arguments for cursor.execute:

cursor.execute(*query)
# = cursor.execute("INSERT INTO user (user_id, first_name, last_name, age, postcode, email_address)"
#                  "VALUES (%s, %s, %s, %s, %s, %s)", (user_id, firstname, lastname, age, postcode, email))

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