"Nick Coghlan" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Phillip J. Eby wrote:
>> I suggest changing this to something like this:
>>
>> class tag(object):
>> def __init__(self,name):
>> self.name = name
>> def __enter__(self):
>> print "<%s>" % name
>> def __exit__(self):
>> print "</%s>" % name
>>
>> with tag('html'):
>> # ... etc.
>>
>> So that it's obvious where the implementation is coming from.
>> Otherwise, it looks altogether too magical.
>
> Done - included in the latest version on SF. [1]
Would this also work as a decorated generator?
(If I have understood correctly, something like..)
@contextmanager
def tag(name)
print "<%s>" % name
yield None
print "</%s>" % name
If so, I suggest putting in both versions to make the correspondence clear.
To whoever invented this example: thanks. It rang a bell with me so I
could see this as a generally usefully feature rather than a specialized
(though for some, important) 'close resource' feature.
The particularly neat thing is that it converts the indent-dedent method of
showing structure to the alternative matched-fences method. This is
certainly not limited to HTML generation.
Terry J. Reedy
_______________________________________________
Python-Dev mailing list
Python-Dev@python.org
http://mail.python.org/mailman/listinfo/python-dev
Unsubscribe:
http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
