new_contents: #!/usr/bin/python2.7
  
  # functions.py by mariuszha
  # 
  # purpose:
  # Create funcions on your own
  #
  # This funciton search for 'a' in a given string
  #
  # Usage: ./funcions.py 'searched string'
  
  import sys
  
  def find_a_in_a_string(searched_string):
  
  	counter = 0
  	for character in searched_string:
  		if character == 'a':
  			counter = counter + 1
  		else:
  			continue
  	print("There are %s letters 'a' in a string." % counter)
  
  find_a_in_a_string(sys.argv[1])
  
subject: Create functions.py