JSONDecodeError 使用 YFinance 下载数据时答案

【问题标题】：JSONDecodeError When using YFinance for downloading dataJSONDecodeError 使用 YFinance 下载数据时
【发布时间】：2021-02-11 10:01:36
【问题描述】：

当我尝试使用 yfinance 库下载数据时出现以下错误。奇怪的事实是，这是我整天运行以下载数据的代码。我在想服务器错误，但我真的不知道。今天早上它给了我这个警告，它不会阻止代码运行，但它实际上会阻止数据下载。你有什么猜测吗？非常感谢

import pandas as pd
import yfinance as yf
import datetime as dt
tickers = ["BTC-USD", "XLM-USD", "XRP-USD", "XMR-USD", "LTC-USD"]
df = pd.DataFrame()
ohlcv = {}
start = dt.datetime.today()-dt.timedelta(3000)
end = dt.datetime.today()-dt.timedelta(0)
for ticker in tickers:
    df[ticker] = yf.download(ticker,start,end, interval = "1wk")['Adj Close'].dropna()

Exception in thread Thread-30:
Traceback (most recent call last):
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\threading.py", line 926, in _bootstrap_inner
    self.run()
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\site-packages\multitasking\__init__.py", line 102, in _run_via_pool
    return callee(*args, **kwargs)
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\site-packages\yfinance\multi.py", line 167, in _download_one_threaded
    actions, period, interval, prepost, proxy, rounding)
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\site-packages\yfinance\multi.py", line 182, in _download_one
    rounding=rounding, many=True)
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\site-packages\yfinance\base.py", line 155, in history
    data = data.json()
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\site-packages\requests\models.py", line 897, in json
    return complexjson.loads(self.text, **kwargs)
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\LorenzoFancelli\Anaconda3\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

【问题讨论】：

标签： python json yfinance

【解决方案1】：

当我将我的 virtualenv 从 Python 3.7 更新到 3.8 时，这发生在我身上。卸载 yfinance 并重新安装它解决了这个问题。也检查这个帖子：https://github.com/ranaroussi/yfinance/issues/318

【讨论】：