Example of how to get financial data from yahoo finance and plot it using matplotlib

stock_info.py

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')

start = dt.datetime(2000, 1, 1)
end = dt.date.today()

df = web.DataReader('AAPL', 'yahoo', start)

df['100ma'] = df['Adj Close'].rolling(window=100, min_periods=0).mean()
print(df[['Open', 'Close', 'Adj Close', '100ma']].tail())

df[['Adj Close', '100ma']].plot()
plt.show()

Perfect coding