Simple i2cdetect clone written in Python 3 with smbus library

i2cdetect.py

import sys
import smbus

first = 0x03
last = 0x77


def i2cdetect(bus_id=0):
    bus = smbus.SMBus(bus_id)
    print('Bus: I2C-{}'.format(bus_id))
    print("      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f")
    for i in range(0, 128, 16):
        print(' {0:02x}: '.format(i), end='')
        for j in range(0, 16):
            address: int = i + j
            res = None
            if address < first or address > last:
                print("   ", end='')
                continue
            try:
                if (0x30 <= address <= 0x37) or (0x50 <= address <= 0x5f):
                    res = bus.read_byte(address)
                else:
                    res = bus.write_quick(address)
            except OSError as error:
                pass
            finally:
                if res is not None:
                    print('{0:02x} '.format(address), end='')
                else:
                    print('-- ', end='')
                    pass
        print('')
    print('')


if __name__ == "__main__":
    bus_start = 0
    bus_count = 1
    argc = len(sys.argv)
    if argc == 2:
        bus_start = int(sys.argv[1])
        bus_count = bus_start + 1
    elif argc == 3:
        bus_start = int(sys.argv[1])
        bus_count = bus_start + int(sys.argv[2])
    for bid in range(bus_start, bus_count):
        i2cdetect(bid)

The output of this code does not match the output of i2cdetect -y 1, as this code does not detect the attached device at 0x40 whereas i2cdetect -y 1 does detect it. The device is a WaveShare 16 channel servo driver HAT, with factory default address 0x40. What is this code missing hat i2cdetect has?