问题
I have a table with fields
TABLE_PASTE(
user_text longtext NOT NULL,
number integer NOT NULL
)
I am trying to insert a row in this table TABLE_PASTE from python using MySQLDb driver.
text="large_text"
value = 1
cursor.execute("Update TABLE_PASTE set user_text = ? where number = ?",(text,value))
Am getting this error
query = query % db.literal(args)
TypeError: not all arguments converted during string formatting
回答1:
With MySQLdb you want to use parameterized (prepared statements technically don't exist in python) statements similar to string formatting in Python 2.x.
cursor.execute("Update TABLE_PASTE set user_text = %s where number = %s",(text,value))
Note that even though your value is an int you still must use %s to format it in your query.
You can find a good tutorial on MySQLdb here.
回答2:
simply you can just use
cursor.execute("Update TABLE_PASTE set user_text = {} where number = {}" .format(text,value))
where format function will format your input accordingly whether its an int or a string!
来源：https://stackoverflow.com/questions/18128870/python-mysqldb-insert-with-prepared-statements