在 Bcrypt (Python) 中使用 SQLite 作为密码字段返回

Question

I want to check if the input password is the same as that stored in the database but when I use bcrypt.checkpw() it returns an error saying that it expects a string or byte because the SQL query returns a tuple. I can't find a way to convert the database response to a byte from a tuple to make it compatible.

sql = ''' SELECT password FROM user_data WHERE username=? '''

username = input('Input username: ')
password = bytes(input('Input Password: '), encoding='utf-8')

cur = conn.cursor()
cur.execute(sql, (username,))
rows = cur.fetchall()

for row in rows:

    if bcrypt.checkpw(password, row):
        details = (user_id, username, password)
        print('logged in')

        return details

        break

Answer 1

Simply adding row[0] within the function solves the problem as it returns the first (and only) value inside the tuple.

Treat it like a list in other words

Extracting the a value from a tuple when the other values are unused