MicroPython 1.21 Released #Python @MicroPython

MicroPython 1.21 was released Friday with significant changes since 1.20 was released last April.

New and Changed

  • Built-in modules to remove the u-prefix
  • Switching of the esp32 port to use IDF 5
  • Support for BLE on RPi Pico W boards
  • Importing has been tweaked and optimised
  • Conversion specifiers in f-strings (e.g. !r)
  • ESP8266 and ESP32 ports add support for the Espressif ESP-NOW protocol
  • An extensive LoRa module has been added
  • And much more

Performance is effectively unchanged since the previous release.

See more in the release notes on GitHub.


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