text: filename='pi_digits.txt'
  
  with open(filename) as file_object:
  
  	for lines_2 in file_object:
  		print(lines_2.replace('Python','ccc'))
  with open(filename) as file_object:
  	lines=file_object.read()
  	print(lines)
  with open(filename) as file_object:
  	lines_3=file_object.readlines()
  	for n in lines_3:
  		print(n)
  
  
  