What is the bug in this Python program?

What is the bug in the following source code?
I am unable to find it myself.

ShapeBase.py

from abc import ABC

class ShapeBase(ABC):
    def __init__(self, idd: str):
        self.id_: str = idd
        self.cx_: float = 0.0
        self.cy_: float = 0.0

    @property
    def cx_(self) -> float:
        return self.cx_

    @cx_.setter
    def cx_(self, cx: float):
        self.cx_ = cx

    @property
    def cy_(self) -> float:
        return self.cy_

    @cy_.setter
    def cy_(self, cy: float):
        self.cy_ = cy

    def id(self) -> str:
        return self.id_

    def area(self) -> float:
        pass

Square.py

from shapes.ShapeBase import ShapeBase

class Square(ShapeBase):
    def __init__(self, idd: str, a: float):
        super().__init__(idd)
        self.a_ = a

    def area(self) -> float:
        return self.a_ * self.a_

    def width(self) -> float:
        return self.a_

main.py

from shapes.Square import Square

if __name__ == '__main__':
    s1 = Square('S1', 4.0)
    print("Area = " + str(s1.area()))
    

Output

C:\Users\pc\AppData\Local\Microsoft\WindowsApps\python3.7.exe C:/Users/pc/source/repos/Shapes/main.py

Process finished with exit code -1073741571 (0xC00000FD)

By the way, this problem is not about the name of the attributes.

This problem is related to inheritance.

Your cx_ property is calling cx_.setter when you call self.cx_ = cx inside the same setter function. To fix this you need to rename the property inside __init__ or remove the property declarations because your property does the same thing as normal python defaults would have done.

Here is the code with internal properties renamed

from abc import ABC

class ShapeBase(ABC):
    def __init__(self, idd: str):
        self.id_: str = idd
        self._cx_: float = 0.0
        self._cy_: float = 0.0

    @property
    def cx_(self) -> float:
        return self._cx_

    @cx_.setter
    def cx_(self, cx: float):
        self._cx_ = cx

    @property
    def cy_(self) -> float:
        return self._cy_

    @cy_.setter
    def cy_(self, cy: float):
        self._cy_ = cy

    def id(self) -> str:
        return self.id_

    def area(self) -> float:
        pass