Rheel-Data-Management 1.2

Data management for python made easy

Rheel Data Management

Strictly-typed, human-readable data management for Python.

Rheel Data Management (RDM) provides a clean .rdm file format and Python API for structured, section-based data storage with enforced types.

It is designed for developers who want more structure and type safety than JSON or TOML --- without the complexity of a database.

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✨ Features

• ✅ Strict type enforcement
• ✅ Native Python type support
• ✅ Nested generics (list[int], dict[int, str])
• ✅ Union types (str | int)
• ✅ Mixed generics (list[str | int])
• ✅ Section-based structure
• ✅ Human-readable format
• ✅ Atomic file saves (corruption protection)
• ✅ Custom type registry
• ✅ Supports datetime, date, time, and pathlib.Path

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📦 Installation

pip install Rheel-Data-Management

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📥 Import

import rheelDM

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📄 Example .rdm File

[user123]
name  : str           = "CoCo"
score : int           = 42
tags  : list[str]     = ["admin", "tester"]
prefs : dict[int,str] = {1: "dark", 2: "light"}

Clean. Typed. Readable.

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🚀 Basic Usage

Create and Save

import rheelDM

data = rheelDM.Obj()

user = data.section("user123")
user.set("name", str, "CoCo")
user.set("score", int, 42)
user.set("tags", list[str], ["admin", "tester"])
user.set("prefs", dict[int, str], {1: "dark", 2: "light"})

data.save("botdata.rdm")

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Load Data

loaded = rheelDM.Obj.load("botdata.rdm")

user = loaded.section("user123")

print(user.get("name"))   # "CoCo"
print(user.get("score"))  # 42

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🧠 Supported Types

Native Python Types

• str
• int
• float
• bool
• list[T]
• set[T]
• tuple[T]
• dict[K, V]
• Nested generics (e.g. list[dict[int, str]])
• Union types (str | int)
• Mixed generics (list[str | int])

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Date & Path Types

• datetime
• date
• time
• Path

Example:

from datetime import datetime
from pathlib import Path

data.section("user").set("last_login", datetime, datetime.now())
data.section("user").set("config_path", Path, Path("config/settings.txt"))

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🧩 Custom Type Registry

You can register your own types globally.

import rheelDM

class Color:
    def __init__(self, hex_code: str):
        self.hex = hex_code

rheelDM.TypeRegistry.register(
    "Color",
    Color,
    lambda v: f'"{v.hex}"',
    lambda v: Color(v.strip('"'))
)

Now you can use it like any native type:

data.section("settings").set("theme", Color, Color("#ff8800"))

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🛡 Why RDM Instead of JSON?

Strict Typing

JSON does not enforce types.
RDM validates everything on write and load.

Python-Native Types

JSON cannot store: - datetime - Path - set - tuple - Union types - Nested generics

RDM can.

Cleaner Structure

Section-based format keeps large files organized and readable.

Human Editable

Minimal syntax:

key : type = value

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🎯 Ideal Use Cases

• Game save systems
• Discord bot data
• Typed configuration systems
• CLI tool configs
• Small to medium persistent data storage