修复 Python 中的“AttributeError: type object has no attribute”

Question

这是我的代码，我得到了 AttributeError。 请帮忙！

 Traceback (most recent call last):
  File "<string>", line 18, in <module>
  File "<string>", line 13, in get_sum_digit_powers
AttributeError: 'DigitPowers' object has no attribute 'start'

class DigitPowers():
    def __init__(self):
      pass
    def is_arm_strong(self, number):
      temp = self.number
      a=list(map(int,str(temp)))
      b=list(map(lambda x: x**5,a))
      if sum(b) == self.number:
        return True
      return False
    def get_sum_digit_powers(self, start, end):
      total = 0
      for i in range(self.start, self.end):
        if i == DigitPowers.is_arm_strong(i):
          total += i
      return total
value = DigitPowers()
print (value.get_sum_digit_powers(10000, 99999))

Answer 1

你应该删除self

您的代码将是：

class DigitPowers():
    def is_arm_strong(self, number):
        temp = number
        a=list(map(int, str(temp)))
        b=list(map(lambda x: x**5, a))
        if sum(b) == number:
          return True
        return False
    def get_sum_digit_powers(self, start, end):
        total = 0
        for i in range(start, end):
            if is_arm_strong(self, i):
                total += i
        return total
value = DigitPowers()
print (value.get_sum_digit_powers(10000, 99999))