from pymata4 import pymata4
import time

segPins = [3, 4, 5, 6, 7, 8, 9]
digPins = [10, 11, 12, 13]

lookupDictionary = {
    "0": "1111110",
    "1": "0110000",
    "2": "1101101",
    "3": "1111001",
    "4": "0110011",
    "5": "1011011",
    "6": "1011111",
    "7": "1110000",
    "8": "1111111",
    "9": "1111011",
    "A": "1110111",
    "B": "0011111",
    "C": "1001110",
    "D": "0111101",
    "E": "1001111",
    "F": "1000111"
}

trafficLightMapping = {
    1: "A001",
    2: "B002",
    3: "C003",
    4: "D004",
    5: "E005",
    6: "F006"
}

stage_durations = {
    1: 5,
    2: 3,
    3: 3,
    4: 5,
    5: 3,
    6: 3
}

def pin_setup(board):
    for pin in segPins + digPins:
        board.set_pin_mode_digital_output(pin)

def write_digit(board, message):
    for digit_index, digit in enumerate(message):
        for d in digPins:
            board.digital_write(d, 1)
        for segment_index, segmentPin in enumerate(segPins):
            board.digital_write(segmentPin, lookupDictionary[digit][segment_index])

        board.digital_write(digPins[digit_index], 0)
        time.sleep(0.000001)
    for d in digPins:
        board.digital_write(d, 1)
    for segment_pin in segPins:
        board.digital_write(segment_pin, 1)

def main():
    board = pymata4.Pymata4()
    pin_setup(board)
    for stage in trafficLightMapping:
        write_digit(board, trafficLightMapping[stage])
        time.sleep(stage_durations[stage])

if __name__ == "__main__":
    main()

so i am trying to display these four digit values on my seven segment display (each value is in the trafficLightMapping dictionary) such that each digit is displayed for a certain period of time (time values are specified in the dictionary below.) stage one should display ‘A001’ onto the display for 5 seconds, stage two should display ‘B002’ for 3 seconds and so on. however when i run the code, the displays light up for less than a second and they do not display the actual 4 digits of each stage. random segments of each digit light up for less than a second, then the display goes blank for the specified time period, then it moves to the next stage. how do i fix it so that the four digits are displayed for each stage, for the time period i need them to be shown for.