Question: I have this structure in C: MAX_NUMBER_OF_ITEMS = 9 typedef struct { uint64_t status; uint8_t serial_number_of_items [MAX_NUMBER_OF_ITEMS]; uint8_t version; } Items_Info_t;  How can I convert it to Python, specifically the part: uint8_t number_of_items [MAX_NUMBER_OF_ITEMS]  I try to do this way: class SensorInfo: status: int serial_number_of_items: List[int] version: int  Also, how can I perform serialization using struct.pack after that?

Answer: Create a class to encapsulate Items_Info_t and manage its serialization/deserialization.  The __init__ method initializes the object's attributes, after doing data validation to ensure that the input values are within the expected ranges. Added an endian parameter to both the serialize and deserialize methods. The default value is '<' (little-endian). Serialization with struct.pack:  '<': Representes the endianness ('<' for little-endian, '>' for big-endian, '!' for network byte order). 'Q': Represents an unsigned 64-bit integer. 'B' * MAX_NUMBER_OF_ITEMS: Represents MAX_NUMBER_OF_ITEMS unsigned 8-bit integers. 'B': Represents a single unsigned 8-bit integer.    import struct from typing import List MAX_NUMBER_OF_ITEMS = 9 class ItemsInfo: def __init__(self, status: int, serial_number_of_items: List[int], version: int): if len(serial_number_of_items) != MAX_NUMBER_OF_ITEMS: raise ValueError(f"serial_number_of_items must have {MAX_NUMBER_OF_ITEMS} elements") if not all(0 <= item <= 255 for item in serial_number_of_items): raise ValueError("All serial numbers must be within the range 0-255 (uint8).") if not (0 <= version <= 255): raise ValueError("version must be within the range 0-255 (uint8).") if status < 0: raise ValueError("Status must be a non-negative integer (uint64).") self.status = status self.serial_number_of_items = serial_number_of_items self.version = version def serialize(self, endian: str = '<') -> bytes: if endian not in ('<', '>', '!'): raise ValueError("Endian must be '<' (little-endian), '>' (big-endian), or '!' (network byte order).") format_string = f"{endian}Q{'B' * MAX_NUMBER_OF_ITEMS}B" return struct.pack(format_string, self.status, *self.serial_number_of_items, self.version) @staticmethod def deserialize(data: bytes, endian: str = '<') -> 'ItemsInfo': if endian not in ('<', '>', '!'): raise ValueError("Endian must be '<' (little-endian), '>' (big-endian), or '!' (network byte order).") format_string = f"{endian}Q{'B' * MAX_NUMBER_OF_ITEMS}B" expected_size = struct.calcsize(format_string) if len(data) != expected_size: raise ValueError(f"Data length is incorrect. Expected {expected_size} bytes, got {len(data)}.") unpacked_data = struct.unpack(format_string, data) status = unpacked_data[0] serial_numbers = list(unpacked_data[1:1 + MAX_NUMBER_OF_ITEMS]) version = unpacked_data[-1] return ItemsInfo(status, serial_numbers, version)  Testing serial_numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9] items_info = ItemsInfo(status=1055, serial_number_of_items=serial_numbers, version=23) serialized_data_network = items_info.serialize(endian='!') print("Serialized Data (network byte order):", serialized_data_network) print("\nDeserialized Data (network byte order):") deserialized_info_network = ItemsInfo.deserialize(serialized_data_network, endian='!') print("Status:", deserialized_info_network.status) print("Serial Numbers:", deserialized_info_network.serial_number_of_items) print("Version:", deserialized_info_network.version)  Output Serialized Data (network byte order): b'\x00\x00\x00\x00\x00\x00\x04\x1f\x01\x02\x03\x04\x05\x06\x07\x08\t\x17' Deserialized Data (network byte order): Status: 1055 Serial Numbers: [1, 2, 3, 4, 5, 6, 7, 8, 9] Version: 23