XML Processing - Python

On Aug 2, 1:45 pm, Roman <rgelfa...@hotmail.com> wrote:
> Is there a package that converts a string that contains special
> characters in xml to to literal value. For instance, converts stringhttp://myhome/&paramtohttp://myhome/&param.
>
> Thanks in advance

I've seen examples using the HTMLgen module. But here's another script
I just found:

http://mail.python.org/pipermail/pyt...er/016814.html

I would think that you could use regular expressions too.

Mike

Robert Dailey wrote:
> Both strings in your example are exactly the same, unless I'm missing
> something.
>
> On 8/2/07, Roman <rgelfand2@hotmail.com> wrote:
>> Is there a package that converts a string that contains special
>> characters in xml to to literal value. For instance, converts string
>> http://myhome/&param to http://myhome/&amp;param.
>>
>> Thanks in advance
>>
>> --
>> http://mail.python.org/mailman/listinfo/python-list


Robert, your newsreader/mail program is converting the HTML/XML entity codes into the corresponding character so you're not seeing the plain text version of what the OP posted. He's asking for code to convert XML entities like '&' into their escaped strings.

I believe xml.sax.saxutils.encode() is what the OP is looking for:

>>> import xml.sax.saxutils
>>> xml.sax.saxutils.escape('http://myhome/&param')
'http://myhome/&amp;param'

-Jay

kyosohma wrote:
> On Aug 2, 1:45 pm, Roman <rgelfa...@hotmail.com> wrote:
>> Is there a package that converts a string that contains special
>> characters in xml to to literal value. For instance, converts stringhttp://myhome/&paramtohttp://myhome/&param.
>>
>> Thanks in advance
>
> I've seen examples using the HTMLgen module. But here's another script
> I just found:
>
> http://mail.python.org/pipermail/pyt...er/016814.html
>
> I would think that you could use regular expressions too.
>
> Mike

I would reccommend against using the example above or using regular expressions, since both are likely to miss corner cases, and the stdlib has an encode function that's already designed for this task

http://docs.python.org/lib/module-xml.sax.saxutils.html

The encode() function in xml.sax.saxutils also is extensible, should you run into any entities that it fails to escape in the current implementation.

-Jay

Roman schrieb:
> Is there a package that converts a string that contains special
> characters in xml to to literal value. For instance, converts string
> http://myhome/&param to http://myhome/&amp;param.

import xml.sax.saxutils

print xml.sax.saxutils.escape("I'm a happy & friendly guy, and 1 < 3 -
never forget that!")

Diez

On Aug 2, 2:09 pm, Jay Loden <pyt...@jayloden.com> wrote:
> kyoso... wrote:
> > On Aug 2, 1:45 pm, Roman <rgelfa...@hotmail.com> wrote:
> >> Is there a package that converts a string that contains special
> >> characters in xml to to literal value. For instance, converts stringhttp://myhome/&paramtohttp://myhome/&param.
>
> >> Thanks in advance
>
> > I've seen examples using the HTMLgen module. But here's another script
> > I just found:
>
> >http://mail.python.org/pipermail/pyt...er/016814.html
>
> > I would think that you could use regular expressions too.
>
> > Mike
>
> I would reccommend against using the example above or using regular expressions, since both are likely to miss corner cases, and the stdlib has an encode function that's already designed for this task
>
> http://docs.python.org/lib/module-xml.sax.saxutils.html
>
> The encode() function in xml.sax.saxutils also is extensible, should you run into any entities that it fails to escape in the current implementation.
>
> -Jay

Yes, I am an idiot.

In article <1186082619.193097.207650@x40g2000prg.googlegroups.com>,
<kyosohma> wrote:
>On Aug 2, 2:09 pm, Jay Loden <pyt...@jayloden.com> wrote:
>> kyoso... wrote:
>> > On Aug 2, 1:45 pm, Roman <rgelfa...@hotmail.com> wrote:
>> >> Is there a package that converts a string that contains special
>> >> characters in xml to to literal value. For instance, converts
>stringhttp://myhome/&paramtohttp://myhome/&param.
>>
>> >> Thanks in advance
>>
>> > I've seen examples using the HTMLgen module. But here's another script
>> > I just found:
>>
>> >http://mail.python.org/pipermail/pyt...er/016814.html
>>
>> > I would think that you could use regular expressions too.
>>
>> > Mike
>>
>> I would reccommend against using the example above or using regular
>expressions, since both are likely to miss corner cases, and the stdlib
>has an encode function that's already designed for this task
>>
>> http://docs.python.org/lib/module-xml.sax.saxutils.html
>>
>> The encode() function in xml.sax.saxutils also is extensible, should
>you run into any entities that it fails to escape in the current
>implementation.
>>
>> -Jay
>
>Yes, I am an idiot.
>

! Unproved, as Scotsmen are wont to say.

This and similar questions arise frequently enough that I recommend
<URL: http://wiki.python.org/moin/EscapingXml > for those who want
to pursue the subject.