從 flask python 中的 mysqlphp 獲取行的值

Question

我有這樣的表：數據庫

我只想打印密碼，例如：

samer

我試過這個：

mysql = MySQL()
flask.config['MYSQL_HOST'] = 'localhost'
flask.config['MYSQL_USER'] = 'root'
flask.config['MYSQL_PASSWORD'] = ''
flask.config['MYSQL_DB'] = 'web'
mysql.init_app(flask)

@flask.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
    email = request.form['email']
    password = request.form['password']
    # print(password)
    cur = mysql.connection.cursor(MySQLdb.cursors.DictCursor)
    cur.execute('SELECT * FROM users WHERE password=%s', (password,))
    user = cur.fetchall()
    print(user)
    # if password is wrong, user will be None else Dict
    if user is not None:
        print(user['password'])
    else:
        print("User not found")

但我收到此錯誤：

TypeError：元組索引必須是整數或切片，而不是 str

如果我使用，我可以打印結果：

for row in user:
    passw = row['password']

但我需要使用第一種方法，我該如何實現？

Answer 1

您需要用fetchone替換fetchall調用：

 cur = mysql.connection.cursor(MySQLdb.cursors.DictCursor)
 cur.execute('SELECT * FROM users WHERE password=%s', (password,))
 user = cur.fetchone()
 # if password is wrong, user will be None else Dict
 if user is not None:
     print(user['password'])
 else:
     print("User not found")