text: import pandas as pd 
  
  def import_data(file, print_head = False):
  	df = pd.read_csv('data/{}.csv'.format(file))
  	print(file)
  	if print_head == True:
  		print("First few values:")
  		print(df.head())
  	return df
  
  def print_max_close(df):
  	close_prices = df['Close']
  	max_close = close_prices.max()
  	print(max_close)
  
  if __name__ == '__main__':
  	for company in ['AAPL', "IBM"]:
  		df = import_data(company)
  		print_max_close(df)
  	print("DONE!")