python——出错误时不提醒用户

def count_words(filename):
    try:
        with open(filename) as f_obj:
            contents=f_obj.read()
    except FileNotFoundError:
        pass    
    else:
        words=contents.spilt()
        num_words=len(words)
        print("This file"+filename+'has about'+str(num_words)+'words.')
===========================================================================================
def count_words(filename):
    try:
        with open(filename) as f_obj:
            contents=f_obj.read()
    except FileNotFoundError:
        message='sorry,the file'+filename+'does not exits'
        print(message)
    else:
        words=contents.spilt()
        num_words=len(words)
        print("This file"+filename+'has about'+str(num_words)+'words.')

其中使用了 try-except-else 的代码块，except是try代码中错误时执行，而except中的代码是pass，也就是在try中代码错误时候直接pass，不给用户编写任何的建议和help。

相应报错的代码也写在了横线下面。