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circle_class
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circle_class
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import math
class Circle:
def __init__(self, radius = 1):
self.radius = radius
#Allows for changing radius and diameter while disallowing the use of negative radius
@property
def radius(self):
return self._radius
@radius.setter
def radius(self, val):
if val > 0:
self._radius = val
self._diameter = val * 2
self._area = (val ** 2 ) * math.pi
else:
raise ValueError('radius cannot be negative')
@property
def diameter(self):
return self._diameter
@diameter.setter
def diameter(self, val):
self.radius = val / 2
self._diameter = val
self._area = (val ** 2) * math.pi
#does not allow for area to be changed manually
@property
def area(self):
return self._area
@area.setter
def area(self, val):
raise AttributeError()
def __str__(self):
return("Circle({})".format(self.radius))
def __repr__(self):
return("Circle({})".format(self.radius))