text: # 
  # Example file for variables
  #
  
  # Declare a variable and initialize it
  f=0
  #print(f)
  
  
  # re-declaring the variable works
  #f="abc"
  #print(f)
  
  
  # ERROR: variables of different types cannot be combined
  #print("this is a string "+str(123))
  
  
  # Global vs. local variables in functions
  def someFunction():
      global f
      f="def"
      print(f)
  
  someFunction()
  print(f)
  
  del f
  print(f)