(encoder, datum)
A 4-byte, big-endian CRC32 checksum
A 4-byte, big-endian CRC32 checksum
A 4 - byte big - endian CRC32 checksum
def write_crc32(encoder, datum):
    """A 4-byte, big-endian CRC32 checksum"""
    encoder.write_crc32(datum)
def write_crc32 ( encoder , datum ) : encoder . write_crc32 ( datum )