CircuitPython reset to RunMode from REPL (interactive)

reset.py

# SPDX-FileCopyrightText: 2023 anecdata
#
# SPDX-License-Identifier: MIT

import microcontroller
import sys

mode = {"0": microcontroller.RunMode.NORMAL,
        "1": microcontroller.RunMode.SAFE_MODE,
        "2": microcontroller.RunMode.UF2,
        "3": microcontroller.RunMode.BOOTLOADER,}
for key in sorted(mode):
    print(f"{key} {mode[key]}")

print("press 0-3 to select RunMode, or any other key to exit to REPL...")
press = sys.stdin.read(1)

if press in mode:
    print("Resetting...")
    microcontroller.on_next_reset(mode[press])
    microcontroller.reset()  
print("No reset.")