python - 从YahooFinance获取价格数据会导致: AttributeError 'nonetype' object has no attribute 'text'

Question

我有一个循环(运行约200次)，以从YahooFinance获得以前的收盘价。此循环随机停止，并出现以下错误消息:

WARNING:root:Some characters could not be decoded, and were replaced with REPLACEMENT CHARACTER.
[...]
AttributeError 'nonetype' object has no attribute 'text'

每次我运行脚本时，脚本都会在不同的位置停止。这是脚本:

from yahoofinancials import YahooFinancials
import csv

with open('instruments.csv', 'r') as csvfile:
    instruments = csv.reader(csvfile, delimiter=',', quoting = csv.QUOTE_NONNUMERIC, quotechar='"')
    for instrument in instruments:
        symbol = instrument[0]
        yahoo_financials = YahooFinancials(symbol)
        price = yahoo_financials.get_prev_close_price()

Answer 1

解决方案:您可以创建符号列表，然后将此列表提供给YahooFincials api，然后执行请求，而不是遍历每个符号并询问价格。似乎该软件包可以很好地解决此问题，尽管需要一些时间。
这是doc的摘录:

from yahoofinancials import YahooFinancials
tech_stocks = ['AAPL', 'MSFT', 'INTC']
yahoo_financials_tech = YahooFinancials(tech_stocks)
tech_stock_price_data = yahoo_financials_tech.get_prev_close_price()