IntroPython2016a/students/Boundb3/Session09/Circle _S09.py at bf89d4e86fb51c3a1c1b8e8426b70e1c1fdeff33 · UWPCE-PythonCert/IntroPython2016a · GitHub

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#create a circle

class Circle (object):

    def __init__(self,radius,*args,**kwargs):
        self.radius = radius
        self.diameter = radius * 2
        self._area = 3.14 * (radius * radius)

     ################################ radius
    @ property
    def radius(self):
        return self._radius

    @ radius.setter
    def radius(self,value):

        print("*****im in radius setter \t", end="")

        if value < 1: print("that is a very small circle!")
        if value > 3: print("that is a good size circle!")
        self._radius = value

    ################################ diameter
    @ property
    def diameter(self):
        return self._radius * 2

    @ diameter.setter
    def diameter(self,value):
        print("*****im in diameter setter")
        self._radius = (value / 2)
        self._diameter = value

     ################################ area
    @ property
    def area(self):
        return self._area

    @ area.setter
    def area(self,value):
        print("Don't change the area - change the radius: AttributeError")
        # try:
        #     return self._area
        # except Exception as e:
        #     print(e)
        #     if e == "AttributeError":
        #         print(e)
        #     else:
        #         print ("some kind of error.  Details: ", e)
        # print("AGAIN - don't do this: change the area - change the radius: AttributeError")
        # return "AttributeError"


    def from_diameter(self,diameter_value):
        radius = diameter_value /2
        radius = self.__init__(radius)


c1 = Circle(2)
print("c1's radius is: {} and diameter is {} ".format(c1.radius, c1.diameter))

c2 = Circle(3)
print("c2's radius is: {} and diameter is {} ".format(c2.radius, c2.diameter))
#print("c2's diameter: " , c2.diameter)
#print("c2's radius: " , c2.radius)

c2.diameter = 7
print("c2's radius is: {} and diameter is {} ".format(c2.radius, c2.diameter))
# print("now c2's diameter: " , c2.diameter)
# print("and c2's radius: " , c2.radius)

c1.radius = 5
print("c1's radius is: {} and diameter is {} ".format(c1.radius, c1.diameter))

print("c1.area is {}".format(c1.area))
c1.area = 14
print("c1.area is {}".format(c1.area))

# c4 = Circle.from_diameter(8)
# print("c4's radius is: {} and diameter is {} ".format(c4.radius, c4.diameter))

cd = Circle.from_diameter(8)
print("cd's radius is: {} and diameter is  ".format(cd.radius))