PyXB: Python XML Schema Bindings

PyXB (“pixbee”) is a pure Python package that generates Python source code for classes that correspond to data structures defined by XMLSchema. The generated classes support bi-directional conversion between XML documents and Python objects. In concept it is similar to JAXB for Java and CodeSynthesis XSD for C++. A Thirty Second Example is at the bottom of this page. Step-by-step examples are in User Reference.

Getting Help

PyXB is distributed on SourceForge.

For support, consult the Help Forum, or subscribe to and email the mailing list.

To file a bug report or see the status of defects reported against the current release, visit the Trac database.

For a history of releases, see Release History.

Thirty Second Example

An example of a program using PyXB to interact with a web service using an automatically-generated module. First, retrieve the WSDL and generate the bindings:

vmserver[171]$ pyxbgen \
  --wsdl-location="" \
  --module=weather \
Retrieving WSDL from
Importing pyxb.binding.datatypes to get binding for wildcard {}schema
NOTE: Created unbound wildcard element from value in schema
PS urn:uuid:3a6c7be2-d9b7-11e0-ae84-001fbc013adc
Complex type {}ArrayOfWeatherDescription renamed to ArrayOfWeatherDescription_
Complex type {}ForecastReturn renamed to ForecastReturn_
Complex type {}WeatherReturn renamed to WeatherReturn_
Python for requires 1 modules
Saved binding source to ./raw/

Then write a program that uses them:

import time
import urllib2
import weather   # Bindings generated by PyXB
import pyxb.utils.domutils as domutils

uri = ''
xml = urllib2.urlopen(uri).read()
doc = domutils.StringToDOM(xml)
fc_return = weather.CreateFromDOM(doc.documentElement)
if fc_return.Success:
    print 'Weather forecast for %s, %s:' % (fc_return.City, fc_return.State)
    for fc in fc_return.ForecastResult.Forecast:
        when = time.strftime('%A, %B %d %Y', fc.Date.timetuple())
        outlook = fc.Desciption # typos in WSDL left unchanged
        low = fc.Temperatures.MorningLow
        high = fc.Temperatures.DaytimeHigh
        print '  %s: %s, from %s to %s' % (when, outlook, low, high)

And run it:

vmserver[171]$ python
Got response for Saint Paul, MN:
 Thursday, September 08 2011: Sunny, from 58 to 80
 Friday, September 09 2011: Partly Cloudy, from 58 to 80
 Saturday, September 10 2011: Sunny, from 58 to 80
 Sunday, September 11 2011: Sunny, from 58 to 81
 Monday, September 12 2011: Partly Cloudy, from 61 to 80
 Tuesday, September 13 2011: Sunny, from 55 to 69
 Wednesday, September 14 2011: Sunny, from 48 to 68

That’s it.

Indices and tables

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