chumicro-compat¶

Cross-runtime compatibility polyfills for CircuitPython, MicroPython, and CPython.

Lightweight reimplementations of the standard-library pieces CircuitPython and MicroPython leave out. Import the polyfill submodule (from chumicro_compat.functools import partial) and the same code runs on all three runtimes: on CPython the real C implementation is re-exported, so the import costs nothing there.

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%

Documentation¶

• User Guide: functools.partial across runtimes, platform notes, examples
• API Reference: partial and its func / args / keywords attributes