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From: Ombongi Moraa Fe <moraa.lovetakes2@gmail.com>
Date: Mon, 29 Apr 2013 14:50:08 +0300
Subject: Re: xml.etree.ElementTree if element does not exist?
To: Stefan Holdermans <stefan@vectorfabrics.com>
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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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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:georgia,=
serif;font-size:small">Hi Stefan, Group<br><br></div><div class=3D"gmail_de=
fault" style=3D"font-family:georgia,serif;font-size:small">Thanks for the t=
humbs up.<br>

<br></div><div class=3D"gmail_default" style=3D"font-family:georgia,serif;f=
ont-size:small">Worked perfectly.<br></div><div class=3D"gmail_extra"><br c=
lear=3D"all"><div><div dir=3D"ltr"><font size=3D"4"><span style=3D"font-fam=
ily:georgia,serif">Saludos<br>

<br>Ombongi Moraa Faith</span></font><br></div></div>
<br><br><div class=3D"gmail_quote">On 29 April 2013 14:22, Stefan Holderman=
s <span dir=3D"ltr">&lt;<a href=3D"mailto:stefan@vectorfabrics.com" target=
=3D"_blank">stefan@vectorfabrics.com</a>&gt;</span> wrote:<br><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;=
padding-left:1ex">

Ombongi,<br>
<div class=3D"im"><br>
&gt; however, if i pass xml data that DOES NOT contain sepid element, i get=
 an error:<br>
&gt;<br>
&gt; Traceback (most recent call last):<br>
&gt; =A0 File &quot;/usr/local/bin/receive.py&quot;, line 21, in &lt;module=
&gt;<br>
&gt; =A0 =A0 sepid =3D content.find(&quot;.//{<a href=3D"http://www.huawei.=
com.cn/schema/common/v2_1}sepid" target=3D"_blank">http://www.huawei.com.cn=
/schema/common/v2_1}sepid</a>&quot;).text<br>
&gt; AttributeError: &#39;NoneType&#39; object has no attribute &#39;text&#=
39;<br>
&gt;<br>
&gt;<br>
&gt; 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 imp=
lementation for xml.etree.ElementTree =A0?<br>
<br>
</div>What about simply testing whether the value returned by find is None?=
 For example:<br>
<br>
=A0 $ cat test.py<br>
=A0 from xml.etree import ElementTree<br>
<br>
=A0 myTree =3D ElementTree.fromstring(&#39;&lt;test /&gt;&#39;)<br>
=A0 myElement =3D myTree.find(&#39;orange&#39;)<br>
<br>
=A0 if myElement is None:<br>
=A0 =A0 =A0 print &#39;tree does not contain a child element &quot;orange&q=
uot;&#39;<br>
=A0 else:<br>
=A0 =A0 =A0 print myElement.text<br>
<br>
<br>
=A0 $ python test.py<br>
=A0 tree does not contain a child element &quot;orange&quot;<br>
<br>
HTH,<br>
<br>
=A0 Stefan</blockquote></div><br></div></div>

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