code: def _get(self, text):
          
          if self.strict:
              match = self.prog.match(text)
              if match:
                  cmd = match.group()
                  if cmd in self:
                      return cmd
          else:
              words = self.prog.findall(text)
              for word in words:
                  if word in self:
                      return word
docs: Analyze the text to get the right function
  
          Parameters
          ----------
          text : str
              The text that could call a function