Datareader 基本示例（雅虎財經）

from pandas_datareader import data

# Only get the adjusted close.
aapl = data.DataReader("AAPL", 
                       start='2015-1-1', 
                       end='2015-12-31', 
                       data_source='yahoo')['Adj Close']

>>> aapl.plot(title='AAPL Adj. Closing Price')

# Convert the adjusted closing prices to cumulative returns.
returns = aapl.pct_change()
>>> ((1 + returns).cumprod() - 1).plot(title='AAPL Cumulative Returns')