new_contents: #!/usr/bin/env python
  import matplotlib.pyplot as plt
  from matplotlib.dates import DateFormatter, WeekdayLocator,DayLocator, MONDAY
  from matplotlib.finance import quotes_historical_yahoo_ohlc, candlestick_ohlc
  # (Year, month, day) tuples suffice as args for quotes_historical_yahoo
  date1 = (2016, 1, 1)
  date2 = (2016, 4, 14)
  mondays = WeekdayLocator(MONDAY)        # major ticks on the mondays
  alldays = DayLocator()              # minor ticks on the days
  weekFormatter = DateFormatter('%b %d')  # e.g., Jan 12
  dayFormatter = DateFormatter('%d')      # e.g., 12
  
  quotes = quotes_historical_yahoo_ohlc('601231.SS', date1, date2)
  print(quotes)
  if len(quotes) == 0:
  	raise SystemExit
  
  fig, ax = plt.subplots()
  fig.subplots_adjust(bottom=0.2)
  ax.xaxis.set_major_locator(mondays)
  ax.xaxis.set_minor_locator(alldays)
  ax.xaxis.set_major_formatter(weekFormatter)
  #ax.xaxis.set_minor_formatter(dayFormatter)
  
  #plot_day_summary(ax, quotes, ticksize=3)
  candlestick_ohlc(ax, quotes, width=0.6)
  
  ax.xaxis_date()
  ax.autoscale_view()
  plt.setp(plt.gca().get_xticklabels(), rotation=45, horizontalalignment='right')
  
  plt.show()
  
  
subject: Add plot2.py to draw candle stick