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mjooln

Environmentally Friendly File Handling

PyPI Python versions License: Apache 2.0 pipeline status

mjooln is a small, dependency-free Python toolbox for file and folder handling. Two ideas make it more than a pathlib wrapper:

  • Atom — a identifier that is unique, sortable, human-readable, and can be found inside arbitrary text just by scanning for its shape.
  • Store — a folder with a persistent identity, so you can find it by name from anywhere on disk without remembering its path.

Install

pip install mjooln

Optional extras:

pip install mjooln[encryption]  # AES file encryption
pip install mjooln[yaml]        # YAML read/write for File

Quickstart

Atom: identifiers that sort, search, and read like sentences

from mjooln import Atom

a = Atom("sensor")
str(a)
# '20260722T191721u217069Z___sensor___39A238F6_83FE_40DB_BDA5_FABDE915016A'

a.way    # 'sensor'
a.time   # datetime(2026, 7, 22, 19, 17, 21, ..., tzinfo=timezone.utc)

Atoms sort chronologically as plain strings, and can be found inside arbitrary text -- handy for scanning file names:

Atom.find_one(f"my_file_{a}.json.gz")  # == a

Store: a folder you can find by name, from anywhere

from mjooln import Store

store = Store.make("~/projects/my_data")
store.file("readme.txt").write("hello")

# ... later, from anywhere, without knowing the path:
same_store = Store.get("my_data")
[f.name for f in same_store.list()]
# ['readme.txt']

Store is a subclass of Folder, so it behaves like one -- list(), file(), walk(), etc. all work directly on it.

Folder and File: everyday file handling

from mjooln import Folder

fo = Folder("~/projects/my_data")
fi = fo.file("data.json")
fi.write_json({"hello": "world"})
fi.read_json()
# {'hello': 'world'}

fi = fi.compress()  # data.json.gz
fi.checksum()        # sha256 hex digest

Modules

  • core — Atom, Atoms, Toml, settings, exceptions
  • filesystem — Path, Folder, File, Store, Serializer, Compressor
  • encryption — Crypt (optional, pip install mjooln[encryption])

See docs/PRINCIPLES.md for the design rationale behind the project.

License

Apache-2.0. See LICENSE.

Release files for mjooln 0.11.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for mjooln 0.11.1
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Table of built distributions (wheels) for mjooln 0.11.1
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mjooln-0.11.1-py3-none-any.whl Python 3 none any Details

Total release size: 60.3 kB

Release files / mjooln-0.11.1.tar.gz

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