The PY32F002A series microcontrollers are cost-effective MCUs with a high performance 32-bit ARM® Cortex®-M0+ core. They feature a wide voltage operating range (1.7V - 5.5V), 20 Kbytes flash, 3 Kbytes SRAM memory, and a maximum operating frequency of 24 MHz. The chip integrates multi-channel I2C, SPI, USART, and other communication peripherals, one channel 12-bit ADC, two 16-bit timers, and two-channel comparators. The PY32F002A series contains various products in different package types.
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That author also created another repository for PY32
https://github.com/py32duino/Arduino-PY32