简单但太多的方法调用位置参数 [英] Simple but too many positional arguments for method call

问题描述

1. 谁能解释为什么 TypeError 是

fib()接受1个位置参数，但给定2个参数.

fib() takes 1 positional argument but 2 were given`

当我只给它一个参数时=> self.fib(self.n-1)！

when I'm only giving it ONE argument => self.fib(self.n - 1) !

此外，在保留类实例化的同时，您能否提出解决此问题的解决方案?

Also, while keeping the instantiation of the class, can you suggest your solution to fix this?

我觉得自我"使用过多，尤其是在添加的更多方法中.可以改善吗?

I feel the "self" is being used too much, especially with the more methods I add. Can that be improved?

只是想把我的头放在一些基础知识上！感谢所有反馈.

Just trying to wrap my head around some basics! All feedback is appreciated.

class math_func:
    def __init__(self, n: "int" = 6, output: "list" = []):
        self.n = n
        self.output = output

    def fib(self):
        print("Current output is:", self.output)
        if self.n == 0:
            return self.output
        else:
            if len(self.output) < 2:
                self.output.append(1)
                self.fib(self.n - 1)
            else:
                last = self.output[-1]
                second_last = self.output[-2]
                self.output.append(last + second_last)
                self.fib(self.n - 1)
            return self.output

first_func = math_func(n=9)
print(first_func.fib())

推荐答案

方法的第一个参数是 self ，它引用方法被调用的 object 上.如果看起来像您希望传递一个参数(看起来像 n )，则需要在方法的签名中包含该参数.

The first argument of a method is self, which refers to the object the method is being called on. If, as it appears, you wish to pass an argument (n, it looks like), you need to include that in the method's signature.

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