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Project Description

mappet

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(f.read())

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

<?xml version='1.0' encoding='iso-8859-2'?>
<a-message>
    <head>
        <id seq="20" tstamp="2015-07-13T10:55:25+02:00"/>
        <initiator>Mr Sender</initiator>
        <date>2015-07-13T10:56:05.597420+02:00</date>
        <type>reply-type</type>
    </head>
    <auth>
        <user first-name="Name" last-name="LastName">id</user>
    </auth>
    <status>
        <result>OK</result>
    </status>
    <reply>
        <cars>
            <Car>
                <id>12345</id>
                <Manufacturer>BMW</Manufacturer>
                <Model_Name>X6</Model_Name>
                <Body>SUV</Body>
                <Fuel>Diesel</Fuel>
                <Doors>5</Doors>
                <ccm>3000</ccm>
                <HP>256</HP>
                <TransType>Automatic</TransType>
                <seats>5</seats>
                <weight>3690</weight>
            </Car>
            <Car>
                <id>54321</id>
                <Manufacturer>BMW</Manufacturer>
                <Model_Name>X1</Model_Name>
                <Body>SUV</Body>
                <Fuel>Diesel</Fuel>
                <Doors>5</Doors>
                <ccm>3000</ccm>
                <HP>198</HP>
                <TransType>Automatic</TransType>
                <seats>5</seats>
                <weight>2890</weight>
            </Car>
        </cars>
    </reply>
</a-message>

Conventions

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']
'BMW'

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):

>>> m.reply.cars.car[0].manufacturer
BMW

To get a string representation use get().

>>> m.reply.cars.car[0].manufacturer.get()
'BMW'

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.

>>> m.reply.cars.car[0].ccm.get(callback=int)
3000

Alternatively, one can use built-in helper functions, defined in helpers.py

>>> m.reply.cars.car[0].ccm.to_int()
3000

Helper functions

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

Release History

0.1.2

This version

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0.1.1

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
mappet-0.1.2-py2-none-any.whl (13.7 kB) Copy SHA256 Checksum SHA256 py2 Wheel Aug 27, 2015
mappet-0.1.2.tar.gz (10.7 kB) Copy SHA256 Checksum SHA256 Source Aug 27, 2015

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