Write a program to accept a filename from the user and display all the lines from the file which contain Python comment character ‘#’.
Answer:
 
  input_filename=input("Enter a file name: ")
 
 
  try:
 
 
  f=open(input_filename+".txt",'r')
 
 
  l=f.readlines()
 
 
  for line in l:
 
 
  if line[0]=='#':
 
 
  print(line)
 
 
  except:
 
 
  print("File not found")
 
  
 
