https://github.com/stuaxo/multidex

Python dictionary with more than one key per item.
https://github.com/stuaxo/multidex

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Python dictionary with more than one key per item.

• Host: GitHub
• URL: https://github.com/stuaxo/multidex
• Owner: stuaxo
• Created: 2015-11-06T13:46:08.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2015-11-06T14:41:31.000Z (about 9 years ago)
• Last Synced: 2024-09-13T20:09:22.429Z (2 months ago)
• Language: Python
• Homepage:
• Size: 0 Bytes
• Stars: 7
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Multidex

Simple Multi Index Dictionaries for python.

Dictionary with secondary indexes.

Ideal for many "small data" situations where data fits into memory, and you want a fast lookup for various fields.

Specify extra indexes and their getters then use as a normal dict, to do lookups using the additional fields use the ```find```  method.

Toy example

```python

from collections import namedtuple

from operator import attrgetter

from multidex import MultiIndex

HighScore = namedtuple("HighScore", "name score species")

highscores = [

    HighScore("terry", 200, "cat"),

    HighScore("jill", 1900, "human"),

    HighScore("zoooby", 100, "cat"),

    HighScore("chilax", 100, "human"),

]

class HighScores(object):

    __metaclass__ = MultiIndex

    alt_indexes = dict(

        species=attrgetter("species"),

        score=attrgetter("score")

    )

score_idx = HighScores(**{score.name: score for score in highscores})

print score_idx.find("score", 100)

(HighScore(name='chilax', score=100, species='human'), HighScore(name='zoooby', score=100, species='cat'))

```