python - 我从 Quandl 检索股票数据时哪里出错了？

Question

ValueError: The Quandl API key must be provided either through the api_key variable or through the environmental variable QUANDL_API_KEY.

我正在尝试从 Quandl 检索一些简单的股票数据。我已经在下面的示例代码中输入了实际的 API key 而不是 x，但我仍然收到错误。我错过了什么吗？

import datetime as dt
import matplotlib.pyplot as plt
from matplotlib import style
import pandas as pd
import pandas_datareader.data as web

style.use('ggplot')

symbol = 'AAPL'
api_key = 'x'

start = dt.datetime(2015, 1, 1)
end = dt.datetime.now()

df = web.DataReader(symbol, 'quandl', start, end, api_key)

print(df.head())

Answer 1

来自quandl docs :

AUTHENTICATION The Quandl Python module is free but you must have a Quandl API key in order to download data. To get your own API key, you will need to create a free Quandl account and set your API key.

After importing the Quandl module, you can set your API key with the following command: quandl.ApiConfig.api_key = "YOURAPIKEY"

因此您需要 pip install 并导入 quandl。然后您可以像上面一样设置 api_key 属性。