Python3 将16进制数据写入二进制文件

import struct
li=[0x50,0x4b,0x3,0x4] #待写入的数据
with open("testfile","wb") as fp:
    for x in array:
        s = struct.pack('B',x)#转换为字节流字符串，B代表unsigned char
        fp.write(s)
fp.close()