python - Unable to bind to pyxb classes with nested (anonymous) types -

i followed instructions this thread, , xml:

<?xml version="1.0" encoding="utf-8" ?> <my_report>     <something> <foo> yes </foo> </something>  <something_else> <id>4</id> <foo>finally</foo> <score>0.2</score> </something_else>     </my_report> 

i created following xsd schema using this tool online.

<xs:schema attributeformdefault="unqualified" elementformdefault="qualified" xmlns:xs="http://www.w3.org/2001/xmlschema">   <xs:element name="my_report">     <xs:complextype>       <xs:sequence>         <xs:element name="something">           <xs:complextype>             <xs:sequence>               <xs:element type="xs:string" name="foo"/>             </xs:sequence>           </xs:complextype>         </xs:element>         <xs:element name="something_else">           <xs:complextype>             <xs:sequence>               <xs:element type="xs:byte" name="id"/>               <xs:element type="xs:string" name="foo"/>               <xs:element type="xs:float" name="score"/>             </xs:sequence>           </xs:complextype>         </xs:element>       </xs:sequence>     </xs:complextype>   </xs:element> </xs:schema> 

i called pyxben -u my_schema.csd -m my_schema in shell, , tried use bindings build objects:

from my_schema import my_report my_xml_report = my_report() 

this seems work far (i can access my_xml_report.something). however, when try fill in nested element:

my_xml_report.something.foo = "no" 

i error 'nonetype'object has no atttribute 'foo'.

the documentation talks anonymous types seem related problem, still can't work:

import pyxb my_xml_report.something = pyxb.bind('foo', "no") 

i error mixedcontenterror: invalid non-element content

how can fill in xml?

denormalized schema difficult, , may need try several approaches provide information required. here's annotated example, though i'm using pyxb 1.2.3 capabilities might little more complete:

import pyxb import my_schema  rep = my_schema.my_report()  # element here simple, single string # element.  inner string element foo pyxb can figure things # out itself.  outer element needs help. # # in normalized schema type of tsomething, # do: # #   rep.something = tsomething('yes') # # without tsomething reachable, build piece-by-piece # do: rep.something = pyxb.bind()  # create instance of whatever type satisfies rep.something.foo = 'yes'    # assign foo element of got created  # can optimize.  here pyxb.bind substitutes # element wrapper around string, , figures out # "yes" can go in foo element: rep.something = pyxb.bind('yes')  # in fact, pyxb can figure out intermediate # intermediate layers: rep.something = 'yes' # no more 2 of them, though (and lowest must simple type).  # here pyxb.bind substitutes type of # something_else element.  again inner content unambiguous , # sequential, values can provided in constructor. rep.something_else = pyxb.bind(4, 'finally', 0.2)  print rep.toxml('utf-8')