格式说明符字符串

Question

当我返回此功能时，我会返回推定名称和＆＃34;无。＆＃34;我如何摆脱＆＃34;无。＆＃34;

def hello_name(yeah):

      """returns a greeting in the form of 'Hello s!'"""
      print('Hello {0}!'.format(yeah))