Re: Alternatives to XML?

[Frank Millman]

"Joonas Liik"  wrote in message 
news:cab1gnpqnjdenaa-gzgt0tbcvwjakngd3yroixgyy+mim7fw...@mail.gmail.com...

On 26 August 2016 at 08:22, Frank Millman <fr...@chagford.com> wrote:
>
> So this is my conversion routine -
>
> lines = string.split('"')  # split on attributes
> for pos, line in enumerate(lines):
>    if pos%2:  # every 2nd line is an attribute
>        lines[pos] = line.replace('&lt;', '<').replace('&gt;', '>')
> return '"'.join(lines)
>
or.. you could just escape all & as &amp; before escaping the > and <,
and do the reverse on decode


Thanks, Joonas, but I have not quite grasped that.

Would you mind explaining how it would work?

Just to confirm that we are talking about the same thing -

This is not allowed - '<root><fld name="<new>"/></root>'  [A]

import xml.etree.ElementTree as etree
x = '<root><fld name="<new>"/></root>'
y = etree.fromstring(x)
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File 
"C:\Users\User\AppData\Local\Programs\Python\Python35\lib\xml\etree\ElementTree.py", 
line 1320, in XML
   parser.feed(text)
xml.etree.ElementTree.ParseError: not well-formed (invalid token): line 1, 
column 17

You have to escape it like this - '<root><fld name="&lt;new&gt;"/></root>' 
[B]

x = '<root><fld name="&lt;new&gt;"/></root>'
y = etree.fromstring(x)
y.find('fld').get('name')
'<new>'


I want to convert the string from [B] to [A] for editing, and then back to 
[B] before saving.

Thanks

Frank


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