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当我运行下面的代码时,我得到一个AttributeError:'set'对象没有属性findMean。我究竟做错了什么?在同一个类中的另一个函数中调用的函数的AttributeError - Python
class BasicStats:
def findMean(self, num = {}):
length = len(num)
sum = 0
for x in num:
sum = sum + x
mean =sum/length
return mean
def findVariance(self, num = {}):
mean = self.findMean(num)
length = len(num)
squared_difference = 0
for x in num:
squared_difference = squared_difference + (x-mean)**2
variance = squared_difference/length
return variance
arr = {1, 23, 343.34, 2}
findVariance(arr)
感谢您的帮助。我需要做些什么才能使它起作用? – user2465510
你应该在类**之外尝试类似** **:'stats = BasicStats()'然后'print(stats.findMean(arr))' –