Question

我创建了一个返回以下错误的函数：

original_alphabet.remove(value)
AttributeError: 'str' object has no attribute 'remove'

我不知道如何修复错误，感谢任何帮助。这是我的代码：

def keyword_cipher_alphabet(keyword):
 original_alphabet = "abcdefghijklmnopqrstuvwxyz"

 for value in original_alphabet:
  if value in keyword:
   original_alphabet.remove(value)

 keyword_alphabet = ""
 for value in original_alphabet:
  keyword_alphabet += value 

 user_keyword = ""
 for value in keyword:
  user_keyword += value

 result = user_keyword + keyword_alphabet

 return result.upper()

Answer 1

导致错误是因为字符串没有方法remove。您可以尝试使用replace：

$> my_str = 'abc'
$> my_str = my_str.replace('b', '')
$> my_str
'ac'

Answer 2

尝试将字符串转换为列表，然后将其删除。

class UserManager(BaseUserManager):
def create_user(self, email, password=None, **extra_fields):
    user = self.model(email=self.normalize_email(email), **extra_fields)
    user.set_password(password)
    user.save(using = self._db)
    return user

def create_superuser(self, email, password=None):
    user = self.create_user(email, password)
    user.is_admin=True
    user.is_staff=True
    user.is_superuser=True
    user.save(using = self._db)
    return user

class Account(AbstractBaseUser, PermissionsMixin):
    email               = models.EmailField(verbose_name='email', unique=True, max_length=60)
    date_joined         = models.DateTimeField(verbose_name='date joined', auto_now_add=True)
    last_login          = models.DateTimeField(verbose_name='last login', auto_now=True)
    is_admin            = models.BooleanField(default=False)
    is_active           = models.BooleanField(default=True)
    is_superuser        = models.BooleanField(default=False)
    is_staff            = models.BooleanField(default=False) 

    USERNAME_FIELD      = 'email'
    # REQUIRED_FIELDS = ['username',]
    objects             = UserManager()

    def __str__(self):
        return self.email

    def has_perm(self, perm, obj = None):
        return self.is_admin

    def has_module_perms(self, app_lebel):
        return True

AttributeError：＆＃39; str＆＃39;对象没有属性＆＃39;删除＆＃39;，如何修复？

2 个答案: