from pythonic import ring( __dict__ dictionary contains 'diameternot 'radius{'date''''metal''copper''diameter' 'price' 'quantity' radius radius is still accessbile area(area is working fine diameter diameter is accessbile next verify the output for the 'box pyfile again from box import box diameter_init( area(area is working fine __dict__ {'date' 'metal''copper''diameter' 'price' 'quantity' @property