Write a piece of Python code that prints out one of the following messages:

• "string involved" if either varA or varB are strings
  
• "bigger" if varA is larger than varB
  
• "equal" if varA is equal to varB
  
• "smaller" if varA is smaller than varB
  
  

  if type(varA) == str or type(varB) == str:
      print 'string involved'
  elif varA > varB:
      print 'bigger'
  elif varA == varB:
      print 'equal'
  else:
      # If none of the above conditions are true,
      # it must be the case that varA < varB
      print 'smaller'