Python论坛的帖子：

Fri Feb 4 10:38:40 HKT 2005

谁知道这个邮件是怎么回事？

我一发邮件就回复这个。

MAILER-DAEMON at eyou.com 写道:

> Hi. This is the deliver program at eyou.com.
> I'm afraid I wasn't able to deliver your message to the following
> addresses.
> This is a permanent error; I've given up. Sorry it didn't work out.
>
> asine.tam at tom.com
> 550 CoremailSys:System is busy. epoDABHgAkIDAD5S.1
> --- Attachment is a copy of the message.
>
>
> ------------------------------------------------------------------------
>
> 主题:
> Re: [python-chinese] 更Pythonic的实现方式
> 发件人:
> cpunion <cpunion at 263.net>
> 日期:
> Fri, 04 Feb 2005 10:36:47 +0800
> 收件人:
> python-chinese at lists.python.cn
>
> 收件人:
> python-chinese at lists.python.cn
>
>
>是要简洁得多。
>
>不过从我多次测试来看，这样的写法好像速度会慢一些。
>
>Qiangning Hong 写道:
>
>  
>
>>Wang Kebo wrote:
>> 
>>
>>    
>>
>>>以下的代码是从limodou的blog上截下来的。不过，总觉得这段代码不是太优雅，
>>>谁可以想到更加pythonic的实现方式？我觉得这样的讨论，能使我们更加熟悉
>>>python的特性。
>>>   
>>>
>>>      
>>>
>>[snip]
>>
>> 
>>
>>    
>>
>>>   def getHomeDir():
>>>       ''' Try to find user's home directory, otherwise return current
>>>   directory.'''
>>>       try:
>>>           path1=os.path.expanduser("~")
>>>       except:
>>>           path1=""
>>>       try:
>>>           path2=os.environ["HOME"]
>>>       except:
>>>           path2=""
>>>   
>>>
>>>      
>>>
>>os.path.expanduser("~") 应该和 os.environ["HOME"]是等价的。
>>
>> 
>>
>>    
>>
>>>       try:
>>>           path3=os.environ["USERPROFILE"]
>>>       except:
>>>           path3=""
>>>
>>>       if not os.path.exists(path1):
>>>           if not os.path.exists(path2):
>>>               if not os.path.exists(path3):
>>>                   return os.getcwd()
>>>               else: return path3
>>>           else: return path2
>>>       else: return path1
>>>   
>>>
>>>      
>>>
>>可以简化成：
>>
>>def getHomeDir():
>>   path1 = os.environ.get('HOME', '')
>>   path2 = os.environ.get('USERPROFILE', '')
>>   return os.path.exists(path1) and path1 \
>>           or os.path.exists(path2) and path2 \
>>           or os.getcwd()
>>_______________________________________________
>>python-chinese list
>>python-chinese at lists.python.cn
>>http://python.cn/mailman/listinfo/python-chinese
>>
>>
>> 
>>
>>    
>>
>_______________________________________________
>python-chinese list
>python-chinese at lists.python.cn
>http://python.cn/mailman/listinfo/python-chinese
>  
>

标题：[python-chinese] Re: failure notice