如何在django的jwt令牌中为不同的用户分配不同的过期时间

{
  "user_id": 123,
  "username": "example_user",
  "exp": 1639564800
}

pip install djangorestframework-simplejwt

# settings.py

INSTALLED_APPS = [
    # ...
    'rest_framework',
    'rest_framework_simplejwt',
    # ...
]

REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ],
}

from rest_framework_simplejwt.tokens import RefreshToken

def login(request):
    # 验证用户身份，生成JWT令牌
    user = authenticate(request, username=request.data['username'], password=request.data['password'])
    if user is not None:
        refresh = RefreshToken.for_user(user)

        # 自定义过期时间
        refresh.set_exp(lifetime=datetime.timedelta(days=7))

        return Response({
            'refresh': str(refresh),
            'access': str(refresh.access_token),
        })
    else:
        return Response({'error': 'Invalid credentials'}, status=status.HTTP_401_UNAUTHORIZED)