缺少参数错误，但给出了一个

Question

我有一个无监督学习课程，其中一个功能似乎无缘无故地抛出错误。我抛出错误的类方法是：

def flatten(self,cluster):
    out = []
    for item in cluster:
        if isinstance(item, (list, tuple)):
            out.extend(HC.flatten(item))
        else:
            out.append(item)
    return out

这是我在网上找到的一个函数，它的参数是一个列表并将其展平，作为参数输入的列表的输出直到列表似乎抛出了错误以及所述错误：

[Running] python -u "c:\Users\benti\Group Project 2\HC\Complete Linkage.py"
(51, 98)
(343, 390)
(150, 317)
(7, 209)
(173, 235)
(11, 85)
((343, 390), 82)
Traceback (most recent call last):
  File "c:\Users\benti\Group Project 2\HC\Complete Linkage.py", line 88, in <module>
    Z= HC.run2()
  File "c:\Users\benti\Group Project 2\HC\Complete Linkage.py", line 82, in run2
    cluster2 = HC.flatten(cluster2)          
  File "c:\Users\benti\Group Project 2\HC\Super.py", line 170, in flatten
    out.extend(HC.flatten(item))
TypeError: flatten() missing 1 required positional argument: 'cluster'

[Done] exited with code=1 in 8.745 seconds

我应该注意我正在使用超类并且没有在该类中抛出此错误。

Answer 1

看起来您想要一个静态方法，请从方法签名中删除 self 参数

class HC:
    def flatten(cluster): # Only cluster remains
        out = []
        for item in cluster:
            if isinstance(item, (list, tuple)):
                out.extend(HC.flatten(item))
            else:
                out.append(item)
        return out

flatten_test = ((343, 390), 82)
print(HC.flatten(toflatten)) # [343, 390, 82]