from decimal import Decimal
from typing import Union

class Coin:
    """
    Custom coin data structure class that holds coin data and allows set access for each variable from outside functions

    Arguments:
    - arg: type, description
    # ...
    """
    bsc_url: str
    eth_url: str
    tracker_url: str
    coin_type: str
    contract: Union[str, object]
    quantity: Decimal
    # ...

    # You SHOULD be explicit
    def __init__(self, bs_url, eth_url, coin_type, contract, quantity):
        self.bs_url = "https://charts.bogged.finance/?token="
        self.eth_url = "https://www.dextools.io/app/uniswap/pair-explorer/"
        self.tracker_url = quanity
        self.coin_type = coin_type
        self.contract = contract
        self.quantity = quantity

    # But it allowed to use kwargs
    def __init__(self, **kwargs):
        self.bs_url = "https://charts.bogged.finance/?token="
        self.eth_url = "https://www.dextools.io/app/uniswap/pair-explorer/"
        self.tracker_url = kwargs.get("tracker_url")
        self.coin_type = kwargs.get("coin_type")
        self.contract = kwargs.get("contract")
        self.quantity = kwargs.get("quantity")