Is there a way to access a python method in another file that is reliant on another method without specifying self?

I have some trouble with creating a python class and methods, and I don’t know how to resolve it.

I have 2 files, 1 file contains a class with multiple methods. 2 of these are:

def get_price_of(ticker: str) -> float:
    URL = 'https://api.kucoin.com/api/v1/market/orderbook/level1?symbol='
    r = requests.get(URL + ticker).json()
    return r['data']['price']

def get_price_of_list(self, tickers):
    prices = {}
    for ticker in tickers:
        prices[ticker] = self.get_price_of(ticker)
    return prices

So the get_price_of_list method utilises the get_price_of method.

My problem: When accessing the get_price_of_list from another file it now asks for 2 params: self and tickers. However, I don’t need it to be an instance so is there any way to convert it to a static method while still being able to access the other function?

>Solution :

Yes. you can use @staticmethod.

As I can see in your get_price_of method, there is no need for your instance to be exist. You just pass a ticker and you get a result back. Same thing with get_price_of_list. They are kind of utility functions that happen to be inside the class namespace. You could also define them in module. But one advantage of using them inside a class is that they are now organized. Relevant functions accumulated inside a class namespace.

Change your methods to:

    @staticmethod
    def get_price_of(ticker: str) -> float:
        URL = "https://api.kucoin.com/api/v1/market/orderbook/level1?symbol="
        r = requests.get(URL + ticker).json()
        return r["data"]["price"]

    @staticmethod
    def get_price_of_list(tickers):
        prices = {}
        for ticker in tickers:
            prices[ticker] = <CLASS_NAME>.get_price_of(ticker)
        return prices

Note that I changed self to the class name itself in get_price_of_list.