[英]AttributeError: 'int' object has no attribute 'weight'
“converters.py”是一個模塊,而“app.py”是一個測試它的python文件
以下是“converters.py 模塊”中的內容:
class KgLbs:
def __init__(self, weight):
self.weight = weight
def lbs_to_kg(self):
return self.weight * 0.45
def kg_to_lbs(self):
return self.weight / 0.45
以下是“app.py”腳本中的內容:
from converters import KgLbs as kglbs
weight = int(input("Weight: "))
weight = kglbs.kg_to_lbs(weight)
print(weight)
這就是當我輸入一個整數時它給我的錯誤:
Weight: 52
Traceback (most recent call last):
File "app.py", line 4, in <module>
weight = kglbs.kg_to_lbs(weight)
File "C:\Users\Cyntexia\PycharmProject\Test\converters.py", line 8, in kg_to_lbs
return self.weight / 0.45
AttributeError: 'int' object has no attribute 'weight'
我想要做的就是輸入一個簡單的整數,然后將其轉換為我希望的重量,盡管這個錯誤以我該死的方式出現
按照您設計類的方式,您必須以這種方式使用它:
weight = KgLbs(weight).kg_to_lbs()
要使用您的方式,您需要將您的方法定義為@classmethods
並將weight
作為參數傳遞給它們(此處不需要__init__
):
class KgLbs:
@staticmethod
def lbs_to_kg(weight):
return weight * 0.45
@staticmethod
def kg_to_lbs(weight):
return weight / 0.45
weight = int(input("Weight: "))
weight = KgLbs.kg_to_lbs(weight)
print(weight)
您尚未初始化對象的權重。 它應該像
from converters import KgLbs as kglbs
weight = int(input("Weight: "))
obj = kglbs(weight)
print(obj.kg_to_lbs())
Python 是一種強類型語言,您要為weight
變量分配一個int
類型的值。 為什么你認為這個int
值應該表現得像一個KgLbs
?
改用這個:
from converters import KgLbs as kglbs
weight = kglbs(int(input("Weight: ")))
weight = weight.kg_to_lbs()
print(weight)
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