How to use the nptdms.types.Int32.read function in npTDMS

"Segment does not start with %r, but with %r" % (expected_tag, tag))

        log.debug("Reading segment at %d", segment_position)

        # Next four bytes are table of contents mask
        toc_mask = types.Int32.read(file)

        if log.isEnabledFor(logging.DEBUG):
            for prop_name, prop_mask in toc_properties.items():
                prop_is_set = (toc_mask & prop_mask) != 0
                log.debug("Property %s is %s", prop_name, prop_is_set)

        endianness = '>' if (toc_mask & toc_properties['kTocBigEndian']) else '<'

        # Next four bytes are version number
        version = types.Int32.read(file, endianness)
        if version not in (4712, 4713):
            log.warning("Unrecognised version number.")

        # Now 8 bytes each for the offset values
        next_segment_offset = types.Uint64.read(file, endianness)
        raw_data_offset = types.Uint64.read(file, endianness)

        # Calculate data and next segment position
        lead_size = 7 * 4
        data_position = segment_position + lead_size + raw_data_offset
        if next_segment_offset == 0xFFFFFFFFFFFFFFFF:
            # Segment size is unknown. This can happen if LabVIEW crashes.
            # Try to read until the end of the file.
            log.warning(
                "Last segment of file has unknown size, "
                "will attempt to read to the end of the file")

def _read_lead_in(self, file, segment_position, is_index_file=False):
        expected_tag = b'TDSh' if is_index_file else b'TDSm'
        tag = file.read(4)
        if tag == b'':
            raise EOFError
        if tag != expected_tag:
            raise ValueError(
                "Segment does not start with %r, but with %r" % (expected_tag, tag))

        log.debug("Reading segment at %d", segment_position)

        # Next four bytes are table of contents mask
        toc_mask = types.Int32.read(file)

        if log.isEnabledFor(logging.DEBUG):
            for prop_name, prop_mask in toc_properties.items():
                prop_is_set = (toc_mask & prop_mask) != 0
                log.debug("Property %s is %s", prop_name, prop_is_set)

        endianness = '>' if (toc_mask & toc_properties['kTocBigEndian']) else '<'

        # Next four bytes are version number
        version = types.Int32.read(file, endianness)
        if version not in (4712, 4713):
            log.warning("Unrecognised version number.")

        # Now 8 bytes each for the offset values
        next_segment_offset = types.Uint64.read(file, endianness)
        raw_data_offset = types.Uint64.read(file, endianness)