[FIXED] How to delete property?

Issue

class C():
    @property
    def x(self):
        return 0
delattr(C(), 'x')

>>> AttributeError: can't delete attribute

I'm aware del C.x works, but this deletes the class's property; can a class instance's property be deleted?

Solution

Refer to this answer; TL;DR, it's not about properties, but bound attributes, and x is bound to the class, not the instance, so it cannot be deleted from an instance when an instance doesn't have it in the first place. Demo:

class C():
    pass

@property
def y(self):
    return 1

c = C()
c.y = y
del c.y  # works
c.y

>>> AttributeError: 'C' object has no attribute 'y'

Answered By - OverLordGoldDragon