old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  class Bob(object):
  	def hey(self, text):
  		if not text.strip():
  			return "Fine. Be that way!"
  		elif text.isupper():
  			return "Woah, chill out!"
  		elif text.endswith('?'):
  			return "Sure."
  		else:
  			return "Whatever."
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  class Bob(object):
  
      def hey(self, text):
          if not text.strip():
              return "Fine. Be that way!"
          elif text.isupper():
              return "Woah, chill out!"
          elif text.endswith('?'):
              return "Sure."
          else:
              return "Whatever."
  
subject: Update bob.py