Read serial output from micro:bit in a phyton program. Via https://stackoverflow.com/questions/58043143/how-to-set-up-serial-communication-with-microbit-using-pyserial

microbit_write_serial.py

from microbit import *

while True:
    x = accelerometer.get_x()
    y = accelerometer.get_y()
    z = accelerometer.get_z()
    print("x, y, z:", x, y, z)
    sleep(500)

read_microbit_serial.py

# pip3 install pyserial --user

import serial
import serial.tools.list_ports as list_ports


PID_MICROBIT = 516
VID_MICROBIT = 3368
TIMEOUT = 0.1


def find_comport(pid, vid, baud):
    ''' return a serial port '''
    ser_port = serial.Serial(timeout=TIMEOUT)
    ser_port.baudrate = baud
    ports = list(list_ports.comports())
    print('scanning ports')
    for p in ports:
        print('port: {}'.format(p))
        try:
            print('pid: {} vid: {}'.format(p.pid, p.vid))
        except AttributeError:
            continue
        if (p.pid == pid) and (p.vid == vid):
            print('found target device pid: {} vid: {} port: {}'.format(
                p.pid, p.vid, p.device))
            ser_port.port = str(p.device)
            return ser_port
    return None


def main():
    print('looking for microbit')
    ser_micro = find_comport(PID_MICROBIT, VID_MICROBIT, 115200)
    if not ser_micro:
        print('microbit not found')
        return
    print('opening and monitoring microbit port')
    ser_micro.open()
    while True:
        line = ser_micro.readline().decode('utf-8')
        if line:  # If it isn't a blank line
            print(line)
    ser_micro.close()