A disk backed dictionary implementation.
Project description
IODict
iodict is a thread safe dictionary implementation which uses a pure python
object store. The dictionary implementation follows the Dict
API, but stores
items using their birthtime allowing users to treat this datastore as a
file system backed OrderedDict
.
Items in the object store use file system attributes, when available to store key and birthtime information. File system attributes enhance the capability of the object store; however, they're not required. In the event xattrs are not available, file stat is used for file creation time along with base64 encoding for object keys.
Usage
import iodict
data = iodict.IODict(path='/tmp/iodict') # Could be any path on the file system
data["key"] = "value"
data
{'key': "value"}
dir(data)
['__class__',
'__delattr__',
'__delitem__',
'__dict__',
'__dir__',
'__doc__',
'__enter__',
'__eq__',
'__exit__',
'__format__',
'__ge__',
'__getattribute__',
'__getitem__',
'__gt__',
'__hash__',
'__init__',
'__init_subclass__',
'__iter__',
'__le__',
'__len__',
'__lt__',
'__module__',
'__ne__',
'__new__',
'__reduce__',
'__reduce_ex__',
'__repr__',
'__setattr__',
'__setitem__',
'__sizeof__',
'__str__',
'__subclasshook__',
'__weakref__',
'_db_path',
'_encoder',
'_lock',
'clear',
'copy',
'fromkeys',
'get',
'items',
'keys',
'pop',
'popitem',
'setdefault',
'update',
'values']
When running in a multiprocessing / threading application, a lock is required to be passed into the iodict class.
import threading
import iodict
data = iodict.IODict(path='/tmp/iodict', lock=threading.Lock)
By default, if no lock is provided, a multiprocessing lock will be created.
The lock object allows the iodict
to respect the locking paradigm of the
executing application.
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
Built Distribution
Hashes for iodict-0.0.1a20211215022705.tar.gz
Algorithm | Hash digest | |
---|---|---|
SHA256 | dc3dc7c875e8b0d6f0401d4ab7696080a86a648ea4747f645f79a62ed97d6281 |
|
MD5 | 311ba8f910ff13147c007a84e4011ef9 |
|
BLAKE2b-256 | 3435fa26f2c750812694173befb6d198e379571d730aa4aea34d7b130d7ae5be |
Hashes for iodict-0.0.1a20211215022705-py3-none-any.whl
Algorithm | Hash digest | |
---|---|---|
SHA256 | 89ce2e4125e9f4809ac3aa1c27d3faea991398537db87377213cbc201e43b621 |
|
MD5 | 4aa960e7e77ac022725acce6abdc9ba4 |
|
BLAKE2b-256 | a47e784f42de7f379b6c69d72da420d95c4e9503e3f4afa747357fb8aff3c058 |