Metadata-Version: 2.1
Name: kvfile
Version: 0.0.1
Summary: Simple File-based KV-Store
Home-page: https://github.com/akariv/kvstore
Author: Adam Kariv
Author-email: adam.kariv@gmail.com
License: MIT
Keywords: data
Platform: UNKNOWN
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 3.6
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Provides-Extra: speedup
Provides-Extra: develop
Requires-Dist: isodate
Provides-Extra: develop
Requires-Dist: pylama; extra == 'develop'
Requires-Dist: tox; extra == 'develop'
Provides-Extra: speedup
Requires-Dist: plyvel (<1); extra == 'speedup'

# kvfile

[![Travis](https://img.shields.io/travis/akariv/kvfile/master.svg)](https://travis-ci.org/akariv/kvfile)
[![Coveralls](http://img.shields.io/coveralls/akariv/kvfile.svg?branch=master)](https://coveralls.io/r/akariv/kvfile?branch=master)

A simple Key-Value store that's file based - so can accommodate large data sets with a small memory footprint.

Internally will use the faster `leveldb` as a storage backend or `sqlite3` as fallback if `leveldb` is not available.

## The Basics

The API should feel familiar to anyone working with Python.
It exposes `get`, `keys` and `items` for reading from the DB, and `set` for setting a value in the DB.

```python
import datetime
import decimal

from kvfile import KVFile

kv = KVFile()

kv.set('s', 'value')
kv.set('i', 123)
kv.set('d', datetime.datetime.fromtimestamp(12325))
kv.set('n', decimal.Decimal('1234.56'))
kv.set('ss', set(range(10)))
kv.set('o', dict(d=decimal.Decimal('1234.58'), 
                 n=datetime.datetime.fromtimestamp(12325)))

assert kv.get('s') == 'value'
assert kv.get('i') == 123
assert kv.get('d') == datetime.datetime.fromtimestamp(12325)
assert kv.get('n') == decimal.Decimal('1234.56')
assert kv.get('ss') == set(range(10))
assert kv.get('o') == dict(d=decimal.Decimal('1234.58'), 
                           n=datetime.datetime.fromtimestamp(12325))

assert sorted(kv.keys()) == ['d', 'i', 'n', 'o', 's', 'ss']
assert sorted(kv.items()) == [
  ('d', datetime.datetime.fromtimestamp(12325)), 
  ('i', 123), 
  ('n', decimal.Decimal('1234.56')), 
  ('o', {'d': decimal.Decimal('1234.58'), 
         'n': datetime.datetime.fromtimestamp(12325)}), 
  ('s', 'value'), 
  ('ss', {0, 1, 2, 3, 4, 5, 6, 7, 8, 9})
]
```

## Installing leveldb

On Debian based Linux:
```bash
$ apt-get install libleveldb-dev libleveldb1
```

On Alpine based Linux:
```bash
$ apk --repository http://dl-3.alpinelinux.org/alpine/edge/testing/ --update add leveldb leveldb-dev
```

On OS X:
```bash
$ brew install leveldb
```

