Lazy, typed string splitting helpers for Python, backed by Rust.
isplit scans a string once and yields pieces as soon as separators are found.
It is useful for tokenizer-style code where callers want to consume tokens
lazily instead of allocating the whole split result up front.
The iterator implementation is backed by a small PyO3 Rust extension when available, with the original pure-Python implementation kept as a fallback.
Installation
python -m pip install isplit-rs
The PyPI distribution is named isplit-rs, while the Python package is imported
as isplit.
Quick start
from isplit import irsplit, isplit
list(isplit("A+B+C+D", "+"))
# ["A", "B", "C", "D"]
list(isplit("AAA,,BBB", ",,"))
# ["AAA", "BBB"]
list(irsplit("A+B+C+D", "+"))
# ["D", "C", "B", "A"]
Or consume pieces lazily:
from isplit import isplit
for token in isplit("AAA,BBB,CCC", ","):
print(token)
Why isplit?
| Feature | What it gives you |
|---|---|
| Lazy iteration | Consume split pieces one at a time |
| Forward and reverse splits | Use isplit or irsplit depending on scan direction |
| Rust acceleration | Use the PyO3 extension when available |
| Pure-Python fallback | Keep imports working even without the extension |
| Typed package | Ship a py.typed marker for type checkers |
API
isplit(text: str, sep: str) -> Iterator[str]
irsplit(text: str, sep: str) -> Iterator[str]
isplit(text, sep)yields pieces from left to right.irsplit(text, sep)yields pieces from right to left.
Both functions follow str.split semantics for non-empty separators and raise
ValueError when sep is empty.
1 maintainer
Release files for isplit-rs 0.1.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| isplit_rs-0.1.0.tar.gz | 9.2 kB | Details |
Built distributions (wheels)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| isplit_rs-0.1.0-cp39-abi3-win_amd64.whl | CPython 3.9 | abi3 | Windows x86-64 | Details |
| isplit_rs-0.1.0-cp39-abi3-manylinux_2_28_x86_64.whl | CPython 3.9 | abi3 | Linux glibc 2.28+ x86-64 | Details |
| isplit_rs-0.1.0-cp39-abi3-macosx_11_0_arm64.whl | CPython 3.9 | abi3 | macOS 11.0+ ARM64 | Details |
Total release size: 635.2 kB
Release files / isplit_rs-0.1.0.tar.gz
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| Size | 9.2 kB |
| Tags | Source |
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