new_contents: import numpy as np
  import cv2
  #from matplotlib import pyplot as plt
  
  def print_img():
  	#load the color image in grayscale 0
  	location =  '/Users/Charles/Downloads/LC80250392016062LGN00.tar/LC80250392016062LGN00/LC80250392016062LGN00_B2.TIF'
  	img = cv2.imread(location)
  	cv2.imshow('image_1',img)
  	b, g, r = cv2.split(img)
  	cv2.imshow('image_2',b)
  	cv2.imshow('image_3',g)
  	cv2.imshow('image_4',r)
  	k = cv2.waitKey()
  	#press ESC key to close window
  	while (k != 27):
  		k = cv2.waitKey()
  	cv2.destroyAllWindows()
  	return
  
  def main():
  	print_img()
  main()
  
subject: add process