text: """
  Given a string, write a function that returns the index of the first unique (non-repeating) 
  character. If there isn't a unique (non-repeating) character, return -1.
  
  Examples:
  
  csFirstUniqueChar(input_str = "lambdaschool") -> 2
  csFirstUniqueChar(input_str = "ilovelambdaschool") -> 0
  csFirstUniqueChar(input_str = "vvv") -> -1
  Notes:
  
  input_str will only contain lowercase alpha characters.
  """
  def csFirstUniqueChar(input_str):
      for item in input_str:
          if input_str.count(item) == 1:
              return input_str.index(item)
      return -1