chumicro-compat¶

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

Provides lightweight reimplementations of CPython standard-library features that are missing or incomplete on microcontroller runtimes. On CPython, re-exports the real C implementations for zero overhead.

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 — what's polyfilled and why, usage patterns
• API Reference — full API documentation