Turbodiff

Zero dependencies ✨ Rust-based 🦀 Super fast 🚀

Turbodiff is a super fast diffing library built from the ground up in Rust for speed and consistency. It focuses on core diffing behavior and exposes both a Rust API and Python bindings.

Credits

This project is inspired by and compatible with the design of DeepDiff.

It was vibe-coded with gpt-5.2-codex. Contributions are welcome.

Features

• DeepDiff-style output keys: values_changed, dictionary_item_added, dictionary_item_removed, iterable_item_added, iterable_item_removed, type_changes
• Options for order ignoring, numeric type tolerance, significant digits, epsilon comparisons, include/exclude paths, and verbose level
• Rust core + Python bindings via pyo3/maturin

Status

This is an early, focused implementation. It targets the most common DeepDiff use cases and is intended as a drop-in replacement for the supported subset.

Installation (Python)

Install from PyPI with pip:

pip install turbodiff

For local development builds, the Python package is built with maturin:

maturin develop --features python

Installation (Rust)

Install from crates.io with cargo:

cargo add turbodiff

Usage (Python)

from turbodiff import DeepDiff

diff = DeepDiff({"a": 1}, {"a": 2})
print(diff.to_dict())
> {'values_changed': {"root['a']": {'old_value': 1, 'new_value': 2}}}

# Truthiness follows DeepDiff semantics
assert not diff # will raise AssertionError

Usage (Rust)

use serde_json::json;
use turbodiff::{DeepDiff, DeepDiffOptions};

let t1 = json!({"a": 1});
let t2 = json!({"a": 2});
let diff = DeepDiff::new(t1, t2);
println!("{}", diff.to_value());

let options = DeepDiffOptions::default().ignore_order(true);
let diff = DeepDiff::with_options(json!([1, 2]), json!([2, 1]), options);
assert_eq!(diff.to_value(), json!({}));

Pretty Output

from turbodiff import DeepDiff
from copy import deepcopy

d = {
    "a": 2,
    "b": 3,
    "c": 4,
    "d": {
        "x": {
            "y": 7,
            "z": 8,
        },
    },
    "g": [1, 2, 3],
    "i": None,
    "k": {"a", "b"},
}
d2 = deepcopy(d)
d2["a"] = 3
d2["d"]["x"]["x"] = None
d2["i"] = 2
d2["k"] = {"a", "c"}
diff = DeepDiff(d, d2)
print(diff.pretty())
> a
> │   - 2
> │   + 3
> ...
> d
> ╰── x
>     ╰── x
>         + None
> ...
> i
> │   - (null) None
> │   + (int) 2
> k
> ╰── [1]
>     - 'b'
>     + 'c'

# Compact output
print(diff.pretty(compact=True))
> a
> │   - 2
> │   + 3
> ...
> d.x.x
> │   + None
> ...
> i
> │   - (null) None
> │   + (int) 2
> k[1]
> │   - 'b'
> │   + 'c'

Supported keyword options (Python)

All options are passed as keyword arguments to DeepDiff(...).

Development

• Rust tests: cargo test
• Python tests: pytest

Contributing

Issues and PRs are welcome. Please include a minimal repro and tests where possible.