code: def file_code(function_index=1, function_name=None):
      
      info = function_info(function_index + 1, function_name)
      with open(info['file'], 'r') as fn:
          return fn.read()
docs: This will return the code of the calling function
      function_index of 2 will give the parent of the caller
      function_name should not be used with function_index
  
      :param function_index: int of how many frames back the program should look
      :param function_name: str of what function to look for
      :return: str of the code from the target function