[Generateds-users] Error converting generateDS object to etree

[Van Huynh Le]

Hi,




--- Copied from Bitbucket ---




       Reproduction of the issue:



<?xml version="1.0" encoding="UTF-8"?>

I report an issue with on bitbucket, but I think the discussion is more active here. Please ignore this email if this is not the right place to report bug. Thanks for the greate package. I’m using generateDS to create Python bindings for XML schema, and it works pretty well. I have a small issue though: the method to_etree of the generated class does not handle attributes well. The following schema describes an element “Rotation“ with two children (pitch, yaw) and one attribute (roll). All these children and attributes are floats between 0 and 360. <schema xmlns="http://www.w3.org/2001/XMLSchema"; xmlns:tns="http://www.example.org/Rotation/"; targetNamespace="http://www.example.org/Rotation/";

    <element  name="Rotation">
      <complexType>
        <sequence>
          <element  name="pitch"  type="tns:degree"></element>
          <element  name="yaw"  type="tns:degree"></element>
        </sequence>
        <attribute  name="roll"  type="tns:degree"  use="required"></attribute>
      </complexType>
    </element>


    <simpleType  name="degree">
      <restriction  base="float">
        <minInclusive  value="0"></minInclusive>
        <maxInclusive  value="360"></maxInclusive>
      </restriction>
    </simpleType>
</schema>

Then I generate the python class with:

generateDS -o rotation.py -f -q  --preserve-cdata-tags --export="write etree"  
Rotation.xsd



import  rotation

obj  =  rotation.Rotation(roll=1,  pitch=2,  yaw=3)
obj_etree  =  obj.to_etree()  # Exception here: TypeError: Argument must be 
bytes or unicode, got 'float'



        if  self.roll  is  not  None:
            element.set('roll',  self.roll)   # Exception here


I’m missing something or is this a bug in generateDS?

Kind regards,

Van Huynh Le

The issue is that the to_etree method of the generated class throws an error: I think the reason is that the generated code does not convert the attribute to string first (lines 935-936):

Rotation.xsd
Description: XML document

<?xml version="1.0" encoding="UTF-8"?>
<tns:Rotation roll="0.0" xmlns:tns="http://www.example.org/Rotation/"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.example.org/Rotation/ Rotation.xsd ">
  <pitch>0.0</pitch>
  <yaw>0.0</yaw>
</tns:Rotation>


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