带有sqlite3数据库存储问题的简单CLI todo管理器

Question

我目前正在尝试制作一个命令行Todo管理器，该管理器将允许用户输入任务，将其删除并列出该任务。从我想像的过程来看，它并没有达到我的预期，这是我第一次使用sqlite3。

我想要达到的目标：

• 将任务存储在数据库中，它将自动向其中添加增量ID。

示例：

python todo.py -add do the laundry on Sunday

[in the database]
Id   Task
1    do the laundry on Sunday

我的代码。

import sqlite3
import argparse


def parse_args():
    desc = 'Todo manager for storing and removing tasks'
    parser = argparse.ArgumentParser(description=desc)
    parser.add_argument("-a", "--add", "-add", help="To add a new item to the list",
                        type=str, nargs="+")
    parser.add_argument("-r", "-remove", "--remove", help="To remove an item from the list",
                        type=int)
    parser.add_argument("-l", "-list", "--list", help="displays the tasks or task in the list",
                        nargs="*")
    args = parser.parse_args()
    return args


@staticmethod
def dict_factory(cursor, row):
    d = {}
    for idx, col in enumerate(cursor.description):
        d[col[0]] = row[idx]
    return d


def get_todo_list():
    database_connection.row_factory = dict_factory
    cursor = database_connection.cursor()
    cursor.execute("select rowid, * FROM todo_list")
    return cursor.fetchall()


def add_to_todo_list(num,task):
    cursor = database_connection.cursor()
    cursor.execute("INSERT INTO todo_list VALUES (?)", (str(task),))
    database_connection.commit()


def remove_from_todo_list(rowid):
    cursor = database_connection.cursor()
    cursor.execute("DELETE FROM todo_list WHERE rowid = ?", (rowid,))
    database_connection.commit()


if __name__ == '__main__':
    commands = parse_args()
    # Creating table for database using sqlite
    database_connection = sqlite3.connect('todo_list.db')
    cursor = database_connection.cursor()
    cursor.execute('''CREATE TABLE if not exists todo_list(
                  description TEXT);''')
    database_connection.commit()

    if commands.add:
        # Stops accepting tasks when there is a blank task as input. 
        if not commands.add == ' ':
           add_to_todo_list(commands.add)
    elif commands.remove:
        remove_from_todo_list(commands.remove)
    elif commands.list:
        get_todo_list()

但是，当我尝试存储数据时，我的数据库不接受任何值。通过在创建表格时将ID设置为Id INTEGER PRIMARY KEY，即

cursor.execute('''CREATE TABLE if not exists todo_list(
                      Id INTEGER PRIMARY KEY
                      description TEXT);''')

当我向数据库添加数据时，Id会增加吗？

Answer 1

sqlite3.InterfaceError: Error binding parameter 1 - probably unsupported type.