A structured collection of common knowledge
Note: we are discussing whether this package is meaningful. See http://lino-framework.org/tickets/109.html
This package is the heart of “common data”, a sustainable way of maintaining and sharing structured common knowledge. The Python package itself contains just some utilities and defines the commondata namespace. It is the base for packages like
- commondata.be : Common knowledge about Belgium
- commondata.ee: Common knowledge about Estonia
- commondata.eg: Common knowledge about Egypt
Maintained in Python
The Python programming language brings together two qualities
- a syntax which makes it easy (or at least possible) to be used by non-programmers
- a powerful programming language working behind the scenes
Freely available under the GPL
Free software should not depend on non-free material.
Designed to be imported
The library does not provide much querying functionality. Just the basic minimum, used to write test cases. This is a design choice. This data is meant to be imported into existing systems which offer their own querying facilities.
The easiest way is to type:
pip install commondata.ee commondata.be
Alternatively you might prefer to use the development version:
$ git clone https://github.com/lsaffre/commondata.git $ git clone https://github.com/lsaffre/commondata-ee.git $ git clone https://github.com/lsaffre/commondata-be.git $ pip install -e commondata $ pip install -e commondata.ee $ pip install -e commondata.be
Online version of this document on https://github.com/lsaffre/commondata
How to use the Place and PlaceGenerator classes.
You define a subclass of Place for each “type” of place:
>>> from commondata.utils import Place, PlaceGenerator >>> class PlaceInFoo(Place): ... def __str__(self): ... return self.name >>> class Kingdom(PlaceInFoo): ... value = 1 >>> class County(PlaceInFoo): ... value = 2 >>> class Borough(PlaceInFoo): ... value = 3 >>> class Village(PlaceInFoo): ... value = 3
The PlaceGenerator is used to instantiate to populate
Part 1 : configuration:
>>> pg = PlaceGenerator() >>> pg.install(Kingdom, County, Borough, Village) >>> pg.set_args('name')
Part 2 : filling data
>>> root = pg.kingdom("Kwargia") >>> def fill(pg): ... pg.county("Kwargia") ... pg.borough("Kwargia") ... pg.village("Virts") ... pg.village("Vinks") ... pg.county("Gorgia") ... pg.village("Girts") ... pg.village("Ginks")
Part 3 : using the data
>>> [str(x) for x in root.children] ['Kwargia', 'Gorgia'] >>> kwargia = root.children >>> [str(x) for x in kwargia.children] ['Kwargia', 'Virts', 'Vinks']
Multilingual place names
You use the commondata.utils.PlaceGenerator.set_args() method to specify the names of the fields of subsequent places.
>>> pg = PlaceGenerator() >>> pg.install(Kingdom, County, Borough, Village) >>> pg.set_args('name name_ar') >>> root = pg.kingdom("Egypt", u'\u0645\u0635\u0631') >>> print(root.name_ar) مصر
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