属性错误："int"对象没有属性"display"

Question

我正在尝试编写一个程序，该程序将数字随机分配给三个不同的列表，然后在不同类的帮助下调用函数"display(("，并显示各种结果。我已经有了我的类和随机化的循环，但是每次我尝试打印 display(( 结果时，我都会收到一个错误，说没有属性"display"。我尝试更改变量名称以查看是否有帮助，但错误仍然存在。

我的代码是：

class Circle():
def __init__(self, radius=1):
self.__radius = radius
def find_area(self):
a = self.__radius * self.__radius * 3.142
return(a)
def setRadius(self, rad):
self.__radius = rad
def getRadius(self):
return(self.__radius)
def display(self):
print("nClass = Circle")
print("The area for this circle is:t")
return(self.find_area())
class Square():
def __init__(self, sside=2.3):
self.__sside = sside
def find_area(self):
a = self.__sside * self.__sside 
return(a)
def setSSide(self, lw):
self.__sside = lw
def getSSide(self):
return(self.__sside)
def display(self):
print("nClass = Square")
print("The area for this square is:t")
return(self.find_area())
class Cube():
def __init__(self, cside=2):
self.__cside = cside
def find_surfacearea(self):
sa = 6 * self.__cside * self.__cside
return(sa)
def setCSide(self, lwh):
self.__cside = lwh
def getCSide(self):
return(self.__cside)
def display(self):
print("nClass = Cube")
print("The area for this cube is:t")
return(self.find_surfacearea())
x1 = Circle()
print(x1.display())
x2 = Square()
print(x2.display())
x3 = Cube()
print(x3.display())
#Lists and Loops
circlelist = []
squarelist = []
cubelist = []
circlecount = 0
squarecount = 0
cubecount = 0
for i in range (10):
shape = random.randint(1, 3)
number = random.randint(0, 10)
if shape == 1:
print("n*Circle*")
circlecount += 1
circlelist.append(number)
elif shape == 2:
print("n*Square*")
squarecount += 1
squarelist.append(number)
else:
print("n*Cube*")
cubecount += 1
cubelist.append(number)
"""x = len(circlelist)
y = len(squarelist)
z = len(cubelist)
for i in range (x):
circlelist[i].display()
#print()
for i in range (y):
squarelist[i].display()
for i in range (z):
cubelist[i].display()"""
print("nThe items in the circle list are:", circlelist)
print(len(circlelist))
print("The items in the square list are:", squarelist)
print(len(squarelist))
print("The items in the cube list are:", cubelist)
print(len(cubelist))
for i in range (len(circlelist)):
circlelist[i].display()
"""for i in range (10):
circlelist.display()
squarelist.display()
cubelist.display()"""

有人可以帮助我看看我可能出错的地方吗？

Answer 1

目前，您的列表只是数字列表。您不能对数字运行display()函数，它必须在您的一个对象上运行。 这需要相对简单的更改。与其有一个数字列表，不如有一个对象列表。

在下面的代码中，我对其进行了更改，而不是将数字附加到列表中，而是附加一个新对象，其中随机数作为半径，sside，cside。

for i in range (10):
shape = random.randint(1, 3)
number = random.randint(0, 10)
if shape == 1:
print("n*Circle*")
circlecount += 1
circlelist.append(Circle(radius=number))
elif shape == 2:
print("n*Square*")
squarecount += 1
squarelist.append(Square(sside=number))
else:
print("n*Cube*")
cubecount += 1
cubelist.append(Cube(cside=number))

如何编辑要在创建时显示__init__函数：

def __init__(self, radius=1):
self.__radius = radius
self.display()