如何解决异常值：'list' object 在 django 中没有属性 'lower'

Question

这是追溯：

Environment:


Request Method: GET
Request URL: ipaddressHere/admin/

Django Version: 3.2.4
Python Version: 3.8.5
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'authentication.apps.AuthenticationConfig',
 'rest_framework',
 'rest_framework.authtoken']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback (most recent call last):
  File "C:\Users\siddh\.virtualenvs\backend-8q1GYrV6\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
    response = get_response(request)
  File "C:\Users\siddh\.virtualenvs\backend-8q1GYrV6\lib\site-packages\django\utils\deprecation.py", line 116, in __call__
    response = self.process_request(request)
  File "C:\Users\siddh\.virtualenvs\backend-8q1GYrV6\lib\site-packages\django\middleware\common.py", line 48, in process_request
    host = request.get_host()
  File "C:\Users\siddh\.virtualenvs\backend-8q1GYrV6\lib\site-packages\django\http\request.py", line 141, in get_host
    if domain and validate_host(domain, allowed_hosts):
  File "C:\Users\siddh\.virtualenvs\backend-8q1GYrV6\lib\site-packages\django\http\request.py", line 691, in validate_host
    return any(pattern == '*' or is_same_domain(host, pattern) for pattern in allowed_hosts)
  File "C:\Users\siddh\.virtualenvs\backend-8q1GYrV6\lib\site-packages\django\http\request.py", line 691, in <genexpr>
    return any(pattern == '*' or is_same_domain(host, pattern) for pattern in allowed_hosts)
  File "C:\Users\siddh\.virtualenvs\backend-8q1GYrV6\lib\site-packages\django\utils\http.py", line 292, in is_same_domain
    pattern = pattern.lower()

Exception Type: AttributeError at /admin/
Exception Value: 'list' object has no attribute 'lower'

当我评论 ALLOWED_HOSTS 时，我没有遇到这个错误，所以我觉得它必须做些什么。 在我没有改变任何东西之前，一切都运行良好。 这就是我允许的主机的样子

ALLOWED_HOSTS = [
    '127.0.0.1',
     and other ip adresses in same format
],

Answer 1

你有

ALLOWED_HOSTS = [
    '127.0.0.1',
     and other ip adresses in same format
],

它需要是

ALLOWED_HOSTS = [
    '127.0.0.1',
     and other ip adresses in same format
]

（注意最后没有逗号）