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Getting “sqlite3.ProgrammingError: Incorrect number of bindings supplied” when splitting lines from file and inserting into database

I’m trying to import data from a csv file to a existing database, the database has 4 columns called product_id, Firstname, Lastname, Address and this is the code for the csv import;

import sqlite3, csv

connection = sqlite3.connect("martin_DB3")
cursor = connection.cursor()

with open("lista.csv","r") as file:
    records = 0
    for i in file:
        cursor.execute("INSERT INTO DATABASE VALUES (?,?,?,?)", i.split(","))
        connection.commit()
        records += 1
connection.close()
print ("Data has been transfered")

But I keep getting the error

sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 4, and there are 1 supplied.

What am I doing wrong?

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Answer

It seems you had the intention of using csv but then you didn’t.

You can do something like this and it will work (even if you have missing values in the CSV):

with open("lista.csv", "r") as file:
    reader = csv.DictReader(file)
    for n, r in enumerate(reader):
        t = tuple(r.values())
        cursor.execute("INSERT INTO DATABASE VALUES (?,?,?,?)", t)
        connection.commit()
        print(n)

BTW: DATABASE is not a great name for a TABLE

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