sparqly

SPARQL semantic translator and object-mapper for Python (wip).

Example

We define a query object as an instance of sparqly.Item, with the predicates listed as attributes following the idiom of pretty_name = "actual name". For example, to query Pre-Raphaelite aritsts on WikiData, the schema we define could look like

from sparqly import Item

class Artist(Item):
  movement      = "wdt:P135"
  instance_of   = "wdt:P31"

We can then generate the query text for a selection with

from sparqly import query

q = query()
q.select(Artist).where(
  movement = "wd:Q184814", # pre-raphaelite
  instance_of = "wd:Q5"    # human
)

print(q.all())

Which will print to the console:

SELECT ?Artist WHERE {
	?Artist wdt:P135 wd:Q184814 ;
	wdt:P31 wd:Q5 .
}

Changelog

Version 0.1.0:

• Object-Relational-Mapping (ORM)
• SELECT
• WHERE

Planned Features

• Ability to attach service
• CONSTRUCT/ASK/DESCRIBE
• Filters like ORDER, LIMIT, GROUP
• More semantic support
• Additional methods for constructing queries depending on circumstance and complexity