python crypto currencies scraper

Python：簡單的加密貨幣刮擦者

這是一個簡單的模塊，可從Coin360.com和CoinMarketCap API中檢索BTC中的即時加密貨幣值

如何使用

首先安裝軟件包

 pip install cryptocurrencies_scraper

基本用法

 from cryptocurrencies_scraper . CurrencyService import Manager
manager = Manager () # Create a new instance of the Manager
manager . update () # Ask the manager to update all currencies values

manager . all_currencies () # returns a dict that contain the currency name and symbol as key and currency information as a list
manager . get_curency ( 'btc' ) # return the list of currency values retrived for bitcoin using symbol
manager . get_curency ( 'bitcoin' ) # return the list of currency values retrived for bitcoin using name 

添加自己的刮板

刮板應擴展CurrentPriceInterface 。這是新刮板的基本方案

 class MySourceForCurrencies ( CurrentPriceInterface ):
    instance = None
    URL = 'https://api.mysource.com/v1/ticker/?limit=3000'
    NAME = "mysource.com"

    @ classmethod
    def get_instance ( cls ) -> 'MySourceForCurrencies' :
        if cls . instance is None :
            cls . instance = MySourceForCurrencies ()
        return cls . instance

    def __init__ ( self ):
        super (). __init__ ()

    def update_currency_list ( self ):
        self . process_data ( requests . get ( self . URL ). json ())

    def process_data ( self , json_data : json ) -> None :
        # Manipulate the the json to be Currency "parsable"
        c = Currency . parse_json ( json_data , self . NAME )
        #When parsed, add it to the index 
        NameIndexes . get_instance (). add_to_index ( c )
        return None

為了使您的刮板工作，您需要將其添加到經理

 from cryptocurrencies_scraper . CurrencyService import Manager
manager = Manager ()
manager . add_source ( MySourceForCurrencies . get_instance ())

# you can also remove a source
manager . remove_source ( MySourceForCurrencies . NAME )

然後在每個manager.update()上。

NameIndex

該類用於內部用來索引所有貨幣。當添加新貨幣時，它將按符號和名稱（符號upper，name lose case）進行分組

唯一有用的方法是NameIndexes.get_instance().add_to_index(currency) 。在每個更新中，它可以從所有舊值中完整清除。

Currency

這是代表一種貨幣的對像是結構

 {
    "symbol" : " BTC " ,
    "name" : " Bitcoin " ,
    "valueUSD" : 5513 ,
    "valueBTC" : 1 ,
    "lastUpdate" : 1566531513813 ,
    "source" : " coin360.com " ,
    "changes" : {
        "7d" : -1 ,
        "24h" : -5 ,
        "1h" : -10
    }
 }