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Re: xml.etree.ElementTree if element does not exist?

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  Re: xml.etree.ElementTree if element does not exist? Ombongi Moraa Fe <moraa.lovetakes2@gmail.com> - 2013-04-29 14:50 +0300

#44496 — Re: xml.etree.ElementTree if element does not exist?

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Hi Stefan, Group

Thanks for the thumbs up.

Worked perfectly.

Saludos

Ombongi Moraa Faith


On 29 April 2013 14:22, Stefan Holdermans <stefan@vectorfabrics.com> wrote:

> Ombongi,
>
> > however, if i pass xml data that DOES NOT contain sepid element, i get
> an error:
> >
> > Traceback (most recent call last):
> >   File "/usr/local/bin/receive.py", line 21, in <module>
> >     sepid = content.find(".//{
> http://www.huawei.com.cn/schema/common/v2_1}sepid").text
> > AttributeError: 'NoneType' object has no attribute 'text'
> >
> >
> > some messages i receive will have the sepid parameter, other will not
> have this parameter. How can i cater for this? kinda like an if .. else
> implementation for xml.etree.ElementTree  ?
>
> What about simply testing whether the value returned by find is None? For
> example:
>
>   $ cat test.py
>   from xml.etree import ElementTree
>
>   myTree = ElementTree.fromstring('<test />')
>   myElement = myTree.find('orange')
>
>   if myElement is None:
>       print 'tree does not contain a child element "orange"'
>   else:
>       print myElement.text
>
>
>   $ python test.py
>   tree does not contain a child element "orange"
>
> HTH,
>
>   Stefan

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