chumicro-compat
Stdlib polyfills for the bits CircuitPython and MicroPython skipped.
Import the polyfill submodule (from chumicro_compat.functools import partial) instead of the stdlib module and your code works everywhere. CPython gets the real C implementation (zero overhead); CircuitPython and MicroPython get a lightweight pure-Python version of the same public API.
Part of the ChuMicro family: small, focused Python libraries for microcontrollers and laptops. Browse all libraries.
Install
# CircuitPython (after `circup bundle-add ChuMicro/ChuMicro-Bundle-Experimental`)
circup install chumicro_compat
# MicroPython
mpremote mip install github:ChuMicro/ChuMicro-Bundle-Experimental/chumicro_compat
# CPython
pip install chumicro-compat-experimental
For bundle setup, pre-compiled .mpy bundles, the experimental channel, and details on PyPI naming, see the chumicro INSTALL guide.
Quick example
from chumicro_compat.functools import partial
def set_led(pin: int, brightness: int) -> None:
"""Set an LED pin to a brightness level."""
print(f"pin {pin} → {brightness}%")
# Freeze the pin, vary the brightness later.
set_status_led = partial(set_led, 13)
set_status_led(50) # pin 13 → 50%
set_status_led(100) # pin 13 → 100%
What's included
functools
| Symbol | Description |
|---|---|
partial(func, *args, **keywords) |
Freeze positional and keyword arguments to a callable |
partial.func |
The original wrapped callable |
partial.args |
Frozen positional arguments (tuple) |
partial.keywords |
Frozen keyword arguments (dict) |
Where this fits
Leaf: no upstream ChuMicro deps. It is a standalone polyfill that no chumicro library currently requires; reach for it in your own code when you want stdlib features (functools.partial, …) missing from CircuitPython / MicroPython.
Platform support
| Runtime | What happens |
|---|---|
| CPython | Uses the built-in functools.partial directly, zero overhead |
| MicroPython | Lightweight pure-Python replacement |
| CircuitPython | Lightweight pure-Python replacement |
The public API (.func, .args, .keywords, __call__, __repr__) is identical across all runtimes.
Examples
| Example | What it shows |
|---|---|
partial_basic.py |
Freeze one argument to a function |
partial_keyword_override.py |
Freeze keyword args, override at call time |
partial_callback.py |
Wire a callback with frozen context (embedded pattern) |
Contributing
Issues, bug reports, and pull requests are welcome, and so is "I ran it on this board and here's what happened", some of the most useful feedback a hardware project can get. Development happens in the ChuMicro repository, whose contributing guide covers setup and the test workflow.
Docs
📖 Stable docs · Experimental docs
Find this library
- PyPI: chumicro-compat
- Bundle: ChuMicro-Bundle (CircuitPython & MicroPython)
- Experimental bundle: ChuMicro-Bundle-Experimental
- Source: libraries/compat
License
1 maintainer
Metadata
1 maintainer
Release files for chumicro-compat-experimental 0.3.4
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| chumicro_compat_experimental-0.3.4.tar.gz | 9.2 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| chumicro_compat_experimental-0.3.4-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 14.1 kB
Release files / chumicro_compat_experimental-0.3.4.tar.gz
| Download URL | chumicro_compat_experimental-0.3.4.tar.gz |
|---|---|
| Size | 9.2 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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| Download URL | chumicro_compat_experimental-0.3.4-py3-none-any.whl |
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| Size | 4.9 kB |
| Tags | Python 3 |
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SHA-256 checksum How to use checksums |
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Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
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