python:将32位的16进制数据以二进制/hex/binary的形式写入到文件

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如0x1234,写入到文件应该是hex:[00 00 12 34]

import sys
import os
import struct

def tran_hex_to_binary(x2):
	temp_list = []
	str_x2 = str(hex(x2))[2:].rstrip()
	
	if (len(str_x2))%2 == 1:
		str_x2 = "0" + str_x2

	for i in range(0, int((8 - len(str_x2))/2)):
		temp_list.append("0x0")
	for i in range(0, int((len(str_x2))/2 + (len(str_x2))%2 )):
		temp_str = "0x" + str_x2[i*2:i*2+2]
		temp_list.append(temp_str)

	print(temp_list)
	with open("1.txt", "wb") as fp:
		for x in temp_list:
			s = struct.pack('B',int(x,16))
			fp.write(s)

tran_hex_to_binary(0x1234)
#tran_hex_to_binary(0x234)

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