python3生成随机数据，并存入sql

#!/usr/bin/python
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2018/6/15 22:46
# @Author  : Kwan
# @File    : insert_db.py
# @Software: PyCharm

import sqlite3
import random
import datetime

# conn = sqlite3.connect('local.db')
#
# c = conn.cursor()
#
# c.execute("insert into system_cfg values(?,?,?)",(2,'test2',1))
#
# conn.commit()
#
# conn.close()

def make_date():
    # def make_card_number(bits):
    #     counter = bits
        # number_list = []
        # while counter:
        #     number_list.append(str(random.randrange(0, 10)))
        #     counter -= 1
        # return number_list

    number_list = [str(x) for x in range(0, 10)]
    card_number = ''
    card_number = card_number.join(tuple(random.choices(number_list,k=10)))
    # card_number = ''
    # card_number = card_number.join(tuple(make_card_number(10)))
    car_type = random.choice(('m','p'))
    localtime = datetime.date.isoformat(datetime.datetime.now())
    data_title = ['card_number','car_type','localtime']
    data_dict = dict.fromkeys(data_title)
    data_dict['card_number'] = card_number
    data_dict['car_type'] = car_type
    data_dict['localtime'] = localtime

    return data_dict

def insert_data(list):
    conn = sqlite3.connect('test.db')
    c = conn.cursor()
    try:
        id = max(c.execute("select max(id) from monthly_card").fetchall())
        max_id = int(id[0])
        for data in list:
            card_number = data['card_number']
            db_car_number = c.execute("select card_number from monthly_card").fetchall()
            if card_number in db_car_number:
                break
            else:
                car_type = data['car_type']
                localtime = data['localtime']
                max_id += 1
                c.execute("insert into monthly_card values (?,?,?,?)", (max_id, card_number, car_type, localtime))

    except sqlite3.OperationalError:
        sql = '''create table if not exists monthly_card
                (id int primary key not null,
                card_number text not null,
                car_type text not null,
                valid text not null);'''
        c.execute(sql)
        id = 0
        for data in list:
            try:
                card_number = data['card_number']
                db_car_number = c.execute("select card_number from monthly_card").fetchall()
                if card_number in db_car_number:
                    break
                else:
                    car_type = data['car_type']
                    localtime = data['localtime']
                    id += 1
                    c.execute("insert into monthly_card values (?,?,?,?)", (id, card_number, car_type, localtime))

            except sqlite3.OperationalError:
                card_number = data['car_number']
                car_type = data['car_type']
                localtime = data['localtime']
                id += 1
                c.execute("insert into monthly_card values (?,?,?,?)", (id, card_number, car_type, localtime))
    # print(type(id_1))
    # id = id_1.fetchall()
    conn.commit()
    conn.close()


# def select_data():
#     conn = sqlite3.connect('test.db')
#     c = conn.cursor()
#     db_car_number = c.execute("select card_number")

# test1 = make_date()
# my_list = []
# my_list.append(test1)
# insert_data(my_list)
# print('OK')

n = 500
my_list = []
while n:
    my_list.append(make_date())
    n-=1
insert_data(my_list)
print('OK')