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Work with XML documents as if they were Python objects

Project description

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Mappet has been created to enable an easy an intuitive way to work with XML structures in Python code.

A well known lxml module has been used under the hood, mainly due to XML parsing performance.

Mappet accepts a string with valid XML, an lxml.etree._Element object or a dict representing the XML tree.

>>> import mappet
>>> f = open('example.xml', 'r')
>>> m = mappet.Mappet(

As an example, an XML document of the following structure has been used:

<?xml version='1.0' encoding='iso-8859-2'?>
        <id seq="20" tstamp="2015-07-13T10:55:25+02:00"/>
        <initiator>Mr Sender</initiator>
        <user first-name="Name" last-name="LastName">id</user>


Every XML node can be accessed in two ways: by attribute and item access.

Dictionary access:

Dictionary access is possible thanks to XML document being represented as a Python dictionary. Conversion of values is done explicitly.

By default, values are returned as str.

>>> m['reply']['cars']['Car'][0]['Manufacturer']

Nodes’ names are case-sensitive.

Attribute access:

Due to restrictions in Python variable names, tag names are normalized for attribute access. Tag names are normalized to lowercase and hyphens to underlines.

Same example using attribute access (__repr__ is responsible for representing the tag):


To get a string representation use get().


get() has two parameters, default and callback. The first one is returned when then node’s value is empty, the second is a function to be called upon the returned value.


Alternatively, one can use built-in helper functions, defined in


Helper functions

  • to_bool
  • to_int
  • to_str
  • to_string
  • to_float
  • to_time
  • to_datetime
  • to_date

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