class RedirectView

def __init__(self, **kwargs):
    """
    Constructor. Called in the URLconf; can contain helpful extra
    keyword arguments, and other things.
    """
    # Go through keyword arguments, and either save their values to our
    # instance, or raise an error.
    for key, value in kwargs.items():
        setattr(self, key, value)

def _allowed_methods(self):
    return [m.upper() for m in self.http_method_names if hasattr(self, m)]

@classonlymethod
def as_view(cls, **initkwargs):
    """Main entry point for a request-response process."""
    for key in initkwargs:
        if key in cls.http_method_names:
            raise TypeError(
                "The method name %s is not accepted as a keyword argument "
                "to %s()." % (key, cls.__name__)
            )
        if not hasattr(cls, key):
            raise TypeError(
                "%s() received an invalid keyword %r. as_view "
                "only accepts arguments that are already "
                "attributes of the class." % (cls.__name__, key)
            )

    def view(request, *args, **kwargs):
        self = cls(**initkwargs)
        self.setup(request, *args, **kwargs)
        if not hasattr(self, "request"):
            raise AttributeError(
                "%s instance has no 'request' attribute. Did you override "
                "setup() and forget to call super()?" % cls.__name__
            )
        return self.dispatch(request, *args, **kwargs)

    view.view_class = cls
    view.view_initkwargs = initkwargs

    # __name__ and __qualname__ are intentionally left unchanged as
    # view_class should be used to robustly determine the name of the view
    # instead.
    view.__doc__ = cls.__doc__
    view.__module__ = cls.__module__
    view.__annotations__ = cls.dispatch.__annotations__
    # Copy possible attributes set by decorators, e.g. @csrf_exempt, from
    # the dispatch method.
    view.__dict__.update(cls.dispatch.__dict__)

    # Mark the callback if the view class is async.
    if cls.view_is_async:
        markcoroutinefunction(view)

    return view

def delete(self, request, *args, **kwargs):
    return self.get(request, *args, **kwargs)

def dispatch(self, request, *args, **kwargs):
    # Try to dispatch to the right method; if a method doesn't exist,
    # defer to the error handler. Also defer to the error handler if the
    # request method isn't on the approved list.
    if request.method.lower() in self.http_method_names:
        handler = getattr(
            self, request.method.lower(), self.http_method_not_allowed
        )
    else:
        handler = self.http_method_not_allowed
    return handler(request, *args, **kwargs)

def get(self, request, *args, **kwargs):
    url = self.get_redirect_url(*args, **kwargs)
    if url:
        if self.permanent:
            return HttpResponsePermanentRedirect(url)
        else:
            return HttpResponseRedirect(url)
    else:
        response = HttpResponseGone()
        log_response("Gone: %s", request.path, response=response, request=request)
        return response

def get_redirect_url(self, *args, **kwargs):
    """
    Return the URL redirect to. Keyword arguments from the URL pattern
    match generating the redirect request are provided as kwargs to this
    method.
    """
    if self.url:
        url = self.url % kwargs
    elif self.pattern_name:
        url = reverse(self.pattern_name, args=args, kwargs=kwargs)
    else:
        return None

    args = self.request.META.get("QUERY_STRING", "")
    if args and self.query_string:
        if urlparse(url).query:
            url = f"{url}&{args}"
        else:
            url = f"{url}?{args}"
    return url

def head(self, request, *args, **kwargs):
    return self.get(request, *args, **kwargs)

def http_method_not_allowed(self, request, *args, **kwargs):
    response = HttpResponseNotAllowed(self._allowed_methods())
    log_response(
        "Method Not Allowed (%s): %s",
        request.method,
        request.path,
        response=response,
        request=request,
    )

    if self.view_is_async:

        async def func():
            return response

        return func()
    else:
        return response

def patch(self, request, *args, **kwargs):
    return self.get(request, *args, **kwargs)

def post(self, request, *args, **kwargs):
    return self.get(request, *args, **kwargs)

def put(self, request, *args, **kwargs):
    return self.get(request, *args, **kwargs)

def setup(self, request, *args, **kwargs):
    """Initialize attributes shared by all view methods."""
    if hasattr(self, "get") and not hasattr(self, "head"):
        self.head = self.get
    self.request = request
    self.args = args
    self.kwargs = kwargs