Ethernet CRC computation with Python zlib.crc32

ethernetCrcTestVector.py

import struct
import zlib

testVector = (
  # input is ascii string
  bytearray(ord(c) for c in "123456789"),
  bytearray([ 0xCB, 0xF4, 0x39, 0x26]),
)

crc = zlib.crc32(testVector[0])
crcBytes = struct.pack('>I', crc) # big endian!?

print(f"Computed: {crcBytes.hex()}")
print(f"Expected: {testVector[1].hex()}")

assert crcBytes == testVector[1]