yfinance - 将我的结束日期设置为 2021-1-1，但数据的结束日期变为今天日期

Posted 2023-02-18

【中文标题】yfinance - 将我的结束日期设置为 2021-1-1，但数据的结束日期变为今天日期

【英文标题】：yfinance - Setting my end date to 2021-1-1 but the end date for the data becomes today date

【发布时间】：2021-09-23 04:16:39

【问题描述】：

对于 yfinance python 模块，我将结束日期设置为 2021-1-1，但结果却是今天。如何解决？

yfinance.download(tickers="AAPL",end="2021-1-1",period="5y",interval="1d") 结果：

【问题讨论】：

查看节目源，如果没有给出开始日期，则给出默认值1970-01-01，如果没有给出开始日期，则按获取周期取，我猜测。来源可以找到here。

【参考方案1】：

我发现当您使用period="5y" 时，无论提到的开始/结束日期都不起作用

去掉 period 参数，你可以尝试 datetime format 设置 start 和 end 日期为 5 年如下

import yfinance
import datetime as dt

enddate = dt.datetime.strptime("2021-01-01", "%Y-%m-%d").date()
startdate = enddate - dt.timedelta(days=365*5) # for 5 years

data = yfinance.download(tickers="AAPL", start=startdate, end=enddate, interval="1d")
print(data)

输出：

[*********************100%***********************]  1 of 1 completed
                  Open        High         Low       Close   Adj Close     Volume
Date
2016-01-04   25.652500   26.342501   25.500000   26.337500   24.323219  270597600
2016-01-05   26.437500   26.462500   25.602501   25.677500   23.713696  223164000
2016-01-06   25.139999   25.592501   24.967501   25.174999   23.249626  273829600
2016-01-07   24.670000   25.032499   24.107500   24.112499   22.268383  324377600
2016-01-08   24.637501   24.777500   24.190001   24.240000   22.386133  283192000
...                ...         ...         ...         ...         ...        ...
2020-12-24  131.320007  133.460007  131.100006  131.970001  131.549637   54930100
2020-12-28  133.990005  137.339996  133.509995  136.690002  136.254608  124486200
2020-12-29  138.050003  138.789993  134.339996  134.869995  134.440399  121047300
2020-12-30  135.580002  135.990005  133.399994  133.720001  133.294067   96452100
2020-12-31  134.080002  134.740005  131.720001  132.690002  132.267349   99116600

[1259 rows x 6 columns]

或

使用 str date 提及开始和结束日期，如下所示

import yfinance
data = yfinance.download(tickers="AAPL", start="2016-01-03", end="2021-01-01", interval="1d")
print(data)

输出：

[*********************100%***********************]  1 of 1 completed
                  Open        High         Low       Close   Adj Close     Volume
Date
2016-01-04   25.652500   26.342501   25.500000   26.337500   24.323219  270597600
2016-01-05   26.437500   26.462500   25.602501   25.677500   23.713696  223164000
2016-01-06   25.139999   25.592501   24.967501   25.174999   23.249626  273829600
2016-01-07   24.670000   25.032499   24.107500   24.112499   22.268383  324377600
2016-01-08   24.637501   24.777500   24.190001   24.240000   22.386133  283192000
...                ...         ...         ...         ...         ...        ...
2020-12-24  131.320007  133.460007  131.100006  131.970001  131.549637   54930100
2020-12-28  133.990005  137.339996  133.509995  136.690002  136.254608  124486200
2020-12-29  138.050003  138.789993  134.339996  134.869995  134.440399  121047300
2020-12-30  135.580002  135.990005  133.399994  133.720001  133.294067   96452100
2020-12-31  134.080002  134.740005  131.720001  132.690002  132.267349   99116600

[1259 rows x 6 columns]