AttributeError: 'MySQLConverter' object has no attribute '_tuple_to_mysql'
AttributeError: 'MySQLConverter' object has no attribute '_tuple_to_mysql'
循环遍历元组并将数据插入 MySQL 数据库时发生错误
在代码的前面部分,我从数据库中选择了多个 FilmID,并希望将 FilmID 重新插入数据库中的不同 table。我正在为 python 使用 MySQL.Connector 模块,但 运行 出现以下错误:
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\conversion.py", line 179, in to_mysql
return getattr(self, "_{0}_to_mysql".format(type_name))(value)
AttributeError: 'MySQLConverter' object has no attribute '_tuple_to_mysql'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\cursor.py", line 417, in _process_params
res = [to_mysql(i) for i in res]
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\cursor.py", line 417, in <listcomp>
res = [to_mysql(i) for i in res]
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\conversion.py", line 181, in to_mysql
raise TypeError("Python '{0}' cannot be converted to a "
TypeError: Python 'tuple' cannot be converted to a MySQL type
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 1883, in __call__
return self.func(*args)
File "Z:\My Files\Student My Documents\A Level\Computing\NEA\nea2.py", line 170, in <lambda>
button1 = tk.Button(window, text="Start Personality Quiz?", command=lambda: menu("1"), width=18)
File "Z:\My Files\Student My Documents\A Level\Computing\NEA\nea2.py", line 17, in menu
PersonalityQuiz()
File "Z:\My Files\Student My Documents\A Level\Computing\NEA\nea2.py", line 82, in PersonalityQuiz
mycursor.execute(LinkInsert,vals)
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\cursor.py", line 539, in execute
psub = _ParamSubstitutor(self._process_params(params))
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\cursor.py", line 421, in _process_params
raise errors.ProgrammingError(
mysql.connector.errors.ProgrammingError: Failed processing format-parameters; Python 'tuple' cannot be converted to a MySQL type
我认为错误的代码如下:
import mysql.connector
import datetime
mydb = mysql.connector.connect(
host="localhost",
user="username",
password="",
database="database name")
sql = "SELECT FilmID FROM Movies"
mycursor = mydb.cursor()
mycursor.execute(sql)
myresult = mycursor.fetchall()
firstname=input
surname=input
SQLinsert = "INSERT INTO users (FirstName, Surname) VALUES (%s,%s)"
vals = (firstname,surname)
mycursor.execute(SQLinsert,vals)
mydb.commit()
UserID = mycursor.lastrowid
for i in myresult:
LinkInsert = "INSERT INTO userlink VALUES (%s,%s,%s)"
vals = (UserID, i, datetime.datetime)
mycursor.execute(LinkInsert,vals)
mydb.commit()
我最初认为这是日期时间的错误,所以我尝试忽略它只是为了得到相同的结果。我希望我提供的内容足够了,因为这是我第一次遇到堆栈溢出问题。如果有人对我的问题有任何解决方案,我将不胜感激。
非常感谢,卢平
您传递的 vals
元组未转换为任何 MySQL 类型。
所以你可以像这样在 executemany
中传递元组 :
mycursor.executemany(LinkInsert,vals)
这是因为变量“i”作为元组传递,换句话说,当您在列表“myresult”中循环时,“i”的值是 (*)
,其中 * 是 id 的值。
所以你必须select第一项的索引:
vals = (UserID, i[0], datetime.datetime)
循环遍历元组并将数据插入 MySQL 数据库时发生错误
在代码的前面部分,我从数据库中选择了多个 FilmID,并希望将 FilmID 重新插入数据库中的不同 table。我正在为 python 使用 MySQL.Connector 模块,但 运行 出现以下错误:
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\conversion.py", line 179, in to_mysql
return getattr(self, "_{0}_to_mysql".format(type_name))(value)
AttributeError: 'MySQLConverter' object has no attribute '_tuple_to_mysql'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\cursor.py", line 417, in _process_params
res = [to_mysql(i) for i in res]
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\cursor.py", line 417, in <listcomp>
res = [to_mysql(i) for i in res]
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\conversion.py", line 181, in to_mysql
raise TypeError("Python '{0}' cannot be converted to a "
TypeError: Python 'tuple' cannot be converted to a MySQL type
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 1883, in __call__
return self.func(*args)
File "Z:\My Files\Student My Documents\A Level\Computing\NEA\nea2.py", line 170, in <lambda>
button1 = tk.Button(window, text="Start Personality Quiz?", command=lambda: menu("1"), width=18)
File "Z:\My Files\Student My Documents\A Level\Computing\NEA\nea2.py", line 17, in menu
PersonalityQuiz()
File "Z:\My Files\Student My Documents\A Level\Computing\NEA\nea2.py", line 82, in PersonalityQuiz
mycursor.execute(LinkInsert,vals)
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\cursor.py", line 539, in execute
psub = _ParamSubstitutor(self._process_params(params))
File "C:\Users\lupin\AppData\Local\Programs\Python\Python38-32\lib\site-packages\mysql\connector\cursor.py", line 421, in _process_params
raise errors.ProgrammingError(
mysql.connector.errors.ProgrammingError: Failed processing format-parameters; Python 'tuple' cannot be converted to a MySQL type
我认为错误的代码如下:
import mysql.connector
import datetime
mydb = mysql.connector.connect(
host="localhost",
user="username",
password="",
database="database name")
sql = "SELECT FilmID FROM Movies"
mycursor = mydb.cursor()
mycursor.execute(sql)
myresult = mycursor.fetchall()
firstname=input
surname=input
SQLinsert = "INSERT INTO users (FirstName, Surname) VALUES (%s,%s)"
vals = (firstname,surname)
mycursor.execute(SQLinsert,vals)
mydb.commit()
UserID = mycursor.lastrowid
for i in myresult:
LinkInsert = "INSERT INTO userlink VALUES (%s,%s,%s)"
vals = (UserID, i, datetime.datetime)
mycursor.execute(LinkInsert,vals)
mydb.commit()
我最初认为这是日期时间的错误,所以我尝试忽略它只是为了得到相同的结果。我希望我提供的内容足够了,因为这是我第一次遇到堆栈溢出问题。如果有人对我的问题有任何解决方案,我将不胜感激。
非常感谢,卢平
您传递的 vals
元组未转换为任何 MySQL 类型。
所以你可以像这样在 executemany
中传递元组 :
mycursor.executemany(LinkInsert,vals)
这是因为变量“i”作为元组传递,换句话说,当您在列表“myresult”中循环时,“i”的值是 (*)
,其中 * 是 id 的值。
所以你必须select第一项的索引:
vals = (UserID, i[0], datetime.datetime)