希望你能得到附加python程序的建议。我们可以使用字典作为数据库,用于非常基本的登录系统程序吗?

#! usr/bin/python3 # Login project sample import json def login(): print("Welcome to login system") New_user = input("Are you a new user? type yes or no: ") if New_user == "yes": a = {} Name = input("Enter your name: ") Email = input("Enter the email: ") Password = input("Enter the password: ") a["Name"] = (Name) a["Email"] = (Email) a["Password"] = (Password) print(a) with open("login.txt", "a+") as f: f.seek(0) data = f.read(100) if len(data) > 0: f.write("\n") x = str(range(1,100)) f.write(x + "=" + json.dumps(a)) x = x + 1 else: b={} def login1(): Email = input("Enter the email: ") Password = input("Enter the password: ") b["Email"] = (Email) b["Password"] = (Password) with open("login.txt", "r") as r: f.seek(0) i = range(100) if i.keys() in b.keys() and i.value() in b.value(): print("Login is successfull") else: login1() login()

我建议不要1)使用字典作为持久存储身份验证数据的方式,2)将用户密码直接存储在这样的数据库中。

如果你真的不需要使用字典,那么一些简单的解决方案 sqlite (.db文件而不是.txt文件)和一些散列库可以帮助您实现目标。代码可能是这样的:

import sqlite3
import hashlib


def create_table():
    query = "DROP TABLE IF EXISTS login"
    cursor.execute(query)
    conn.commit()

    query = "CREATE TABLE login(name VARCHAR DEFAULT '', email VARCHAR NOT NULL UNIQUE, password VARCHAR NOT NULL)"
    cursor.execute(query)
    conn.commit()

def add_user(name, email, raw_password):
    query = "INSERT INTO login (name, email, password) VALUES (?, ?, ?)"
    hashed_password = hashlib.sha256(raw_password.encode('utf-8')).hexdigest()
    cursor.execute(query, (name, email, hashed_password))
    conn.commit()

def check_user(name, email, raw_password):
    query = 'SELECT * FROM login WHERE name = ? AND email = ? AND password = ?'
    hashed_password = hashlib.sha256(raw_password.encode('utf-8')).hexdigest()
    cursor.execute(query, (name, email, hashed_password))
    result = cursor.fetchone()
    conn.commit()
    print('[DEBUG][check] result:', result)
    return result

def login():
    answer = input("Login (Y/N): ")
    if answer.lower() == "y":
        name = input("Name: ")
        email = input("Email: ")
        password = input("Password: ")
        if check_user(name, email, password):
            print("Email correct!")
            print("Password correct!")
            print("Logging in...")
        else:
            print("Something wrong")

# --- main ---

conn = sqlite3.connect("users.db")
cursor = conn.cursor()

create_table()  # use only once

name = input("New name: ")
email = input("New email: ")
password = input("New password: ")

add_user(name, email, password)

login()

cursor.close()
conn.close()