Class Name is not defined 錯誤 python

Question

在我進行 python 編程時遇到了一個錯誤。 代碼如下。

import skfuzzy as fuzz
from skfuzzy import control as ctrl
f =fuzzy_()
print(f)
class fuzzy_:
    def __init__(self):
        pass
    def values(self,t = None, m = None, p = None):

“class 名稱模糊_未定義”。 顯示錯誤。

請幫忙。

Answer 1

您需要像這樣重新排序：

import skfuzzy as fuzz
from skfuzzy import control as ctrl

class fuzzy_:
    def __init__(self):
        pass
    def values(self,t = None, m = None, p = None):

# First define the class
# Then instantiate it
f = fuzzy_()
print(f)

python 解釋器需要先找到 class 定義，同時從上到下讀取代碼。 在您的代碼示例中，解釋器嘗試實例化fuzzy_ _class object，但在此之前它不知道fuzzy_()是什么而引發錯誤。

Answer 2

python interpreter reads from top to bottom, you are calling the instance of class before defining the class, move line 3 and 4 to the bottom after declaring the class and it should be fine.