Need advice on how to improve this function

08-20-2006

I wrote a function that converts a tuple of tuples into html. For
example:

In [9]: x
Out[9]:
('html',
('head', ('title', 'this is the title!')),
('body',
('h1', 'this is the header!'),
('p', 'paragraph one is boring.'),
('p',
'but paragraph 2 ',
('a', {'href': 'http://example.com'}, 'has a link'),
'!')))

In [10]: as_html(x, sys.stdout)
<html>

<head>

<title>this is the title!</title>

</head>

<body>

<h1>this is the header!</h1>

<p>paragraph one is boring.</p>

<p>but paragraph 2 <a href="http://example.com">has a link</a>!</p>

</body>

</html>

I'd like to know ways to make it better (more efficient, able to deal
with enormous-size arguments, etc). How would I write this as a
generator?

Here's the definition for as_html:

def as_html(l, s):
"Convert a list or tuple into html and write it to stream s."
if isinstance(l, (tuple, list)):
tagname = l[0]
if isinstance(l[1], dict):
attributes = ' '.join(['%s="%s"' % (k, l[1][k]) for k in l[1]])
s.write('<%s %s>' % (tagname, attributes))
else:
s.write('<%s>' % tagname)
if tagname in ('html', 'head', 'body'):
s.write('\n\n')
for ll in l[1:]:
as_html(ll, s)
s.write('</%s>' % tagname)
if tagname not in ('a', 'b', 'ul'):
s.write('\n\n')
elif isinstance(l, str):
s.write(l)

All comments welcome. TIA

--
A better way of running series of SAS programs:
http://overlook.homelinux.net/wilson...asAndMakefiles

08-21-2006

Matthew Wilson wrote:
> I wrote a function that converts a tuple of tuples into html. For
> example:
>
> In [9]: x
> Out[9]:
> ('html',
> ('head', ('title', 'this is the title!')),
> ('body',
> ('h1', 'this is the header!'),
> ('p', 'paragraph one is boring.'),
> ('p',
> 'but paragraph 2 ',
> ('a', {'href': 'http://example.com'}, 'has a link'),
> '!')))
>
>
> In [10]: as_html(x, sys.stdout)
> <html>
>
> <head>
>
> <title>this is the title!</title>
>
> </head>
>
> <body>
>
> <h1>this is the header!</h1>
>
> <p>paragraph one is boring.</p>
>
> <p>but paragraph 2 <a href="http://example.com">has a link</a>!</p>
>
> </body>
>
> </html>
>
>
> I'd like to know ways to make it better (more efficient, able to deal
> with enormous-size arguments, etc). How would I write this as a
> generator?
>
> Here's the definition for as_html:
>
> def as_html(l, s):
> "Convert a list or tuple into html and write it to stream s."
> if isinstance(l, (tuple, list)):
> tagname = l[0]
> if isinstance(l[1], dict):
> attributes = ' '.join(['%s="%s"' % (k, l[1][k]) for k in l[1]])
> s.write('<%s %s>' % (tagname, attributes))
> else:
> s.write('<%s>' % tagname)
> if tagname in ('html', 'head', 'body'):
> s.write('\n\n')
> for ll in l[1:]:
> as_html(ll, s)
> s.write('</%s>' % tagname)
> if tagname not in ('a', 'b', 'ul'):
> s.write('\n\n')
> elif isinstance(l, str):
> s.write(l)
>
>
> All comments welcome. TIA
>
Before you put too much work into this you might want to take a look
at HTMLgen: http://www.python.net/crew/friedrich...html/main.html

-Larry

08-21-2006

Matthew Wilson wrote:

> I'd like to know ways to make it better (more efficient, able to deal
> with enormous-size arguments, etc). How would I write this as a
> generator?

what makes you think that a generator would be the right tool for this
task? what's the use case?

(btw, generating "enormous-size" html pages strikes me as a rather
pointless exercise...)

</F>

08-22-2006

At Monday 21/8/2006 12:03, Larry Bates wrote:

> > I wrote a function that converts a tuple of tuples into html. For
> > example:
> > I'd like to know ways to make it better (more efficient, able to deal
> > with enormous-size arguments, etc). How would I write this as a
> > generator?
>Before you put too much work into this you might want to take a look
>at HTMLgen: http://www.python.net/crew/friedrich...html/main.html

Another very good library is <http://dustman.net/andy/python/HyperText>
(Don't be afraid of the date - it's just that HTML standards haven't
changed very much lately

)

Gabriel Genellina
Softlab SRL

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