Django - user_passes_test auth 装饰器 - 'bool' object 不可调用

Question

Hi I'm trying to use the user_passes_test decorator mentioned here . But I keep getting this error:

'bool' object is not callable

My usage:

@user_passes_test(lambda u: u.is_active() and u.is_staff())
def fulfillment(request):
    ...

Answer 1

is_staff is a field of User not a method. Get rid of ()

Answer 2

another situation if you write a code like this:

newFile = open('pickled','w')
pickle.dump(newText, newFile)
newFile.closed()

as you see, newFile.closed() will trigger the same error, 'bool' object is not callable

it's caused: newFile.closed() is a boolean value... and it's assigned to a variable or in equation or something else...