最近半年（2021年11月-2022年04月）币种跌幅排行

使用程序分析最近半年币种跌幅排名

一、程序

以OKX的SWAP做为分析对象，程序如下：

exchange = Exchange("okexv5")  #
symbols = exchange.symbols(market='SWAP')

for symbol, item in symbols.items():
    bulldays, beardays = 0, 0
    currenttime = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
    if item['cttype'] != 'linear':
        continue
    if item["quote"] not in ["USDT"]:   # 计价货币过滤
        continue
                    
    # print(150 * "=")

    kline = exchange.kline(symbol = symbol, interval = '1day', limit = 180)
    stamp, open, high, low, close, volume = kline
    # print(stamp[0])
    if len(close) < 180:
        continue
    print(symbol, high.max(), low.min(), max(open.max(),close.max()), min(open.min(),close.min()))