Python报错：需传入2个参数但仅传1个，代码调用问题排查

Hey, let's break down why you're hitting that "Takes exactly 2 arguments 1 given" error and fix it up.

核心问题 #

The root cause is super straightforward: you're passing an extra argument 'prezels' to get_order_books, but the method's definition in the yellowgod library doesn't accept any parameters besides the implicit self (which Python automatically passes when you call an instance method).

Let's map this clearly:

• Your code: price = client.get_order_books('prezels') — this sends 2 arguments to the method: the instance itself (self) and 'prezels'.
• The library's method definition: def get_order_books(self): — this only expects 1 argument (self).

That's exactly why you're seeing the argument mismatch error.

修复方案 #

We have two paths depending on what you actually need:

1. 如果get_order_books不需要商品参数

If this method is designed to return all order books by default, just remove the extra argument when calling it:

price = client.get_order_books()

2. 如果确实需要获取'prezels'对应的订单簿

It looks like the library's get_order_books wrapper is missing support for passing a product filter, but the underlying _post2 method accepts **kwargs which lets you pass additional data to the API request. Here are two ways to handle this:

方案A：修改库的get_order_books方法（如果有权限编辑代码）

更新方法以接受商品参数，并把参数传递给_post2：

def get_order_books(self, symbol):
    # 把商品标识以JSON格式传给API请求
    return self._post2('returnOrderBook', json={'symbol': symbol})

之后你就可以像原来那样调用：

price = client.get_order_books('prezels')

(注意：要确保symbol这个键名和API要求的一致，如果API用的是pair或其他术语，记得替换成对应名称)

方案B：直接调用_post2方法（如果无法修改库代码）

跳过get_order_books包装器，直接用底层方法发送请求：

price = client._post2('returnOrderBook', json={'symbol': 'prezels'})

这样就能绕过包装器，直接把参数传给API，应该就能拿到'prezels'的订单簿数据了。

内容的提问来源于stack exchange，提问作者DemonSlayer