如何替换字典中的多个字符

Question

我正在尝试进行股票筛选。对于某些股票，它没有值，并且显示“ N / A”，我想将其替换为0。此外，对于同一指标，它具有百分比字符，我也需要删除该字符。我在从字典的相同值中删除两个字符时遇到了麻烦。

例如，在所有情况下，我都需要摆脱百分号，而在少数情况下，则需要摆脱不适用。

...

def scrape(stock_list, interested, technicals):
    for each_stock in stock_list:
        technicals = scrape_yahoo(each_stock)
        condition_1 = float(technicals.get('Return on Equity',0).replace('%','')) > 25
        condition_2 = float(technicals.get('Trailing P/E',0)) > 15
        condition_3 = float(technicals.get('Price/Book (mrq)',0)) <15
        print(each_stock)
        for ind in interested:
            if (condition_1 and condition_2)==True:

                print(ind + ": "+ technicals[ind])
        print("------")
        time.sleep(1)                                                    # Use delay to avoid getting flagged as bot
    return technicals

...

ValueError：无法将字符串转换为浮点数：“ 54.34％”