python3 编码与解码

import binascii
import sys

"""
python3:
python3默认编码为unicode，由str类型进行表示。二进制数据使用byte类型表示
字符串通过编码转换成字节码，字节码通过解码成为字符串
encode：str –> bytes
decode：bytes – > str

转：https://www.jianshu.com/p/c6a3a0167ff9
"""

print("print1：", sys.getdefaultencoding())

name = "中国"
name = name.encode("utf-8")
print(name)
print("print2：", type(name), name)
name = name.decode("utf-8")
name = name.encode("gbk")
print("print4：", type(name), name)


a = ‘worker‘.encode()
#先把worker转换成二进制数据然后在用十六进制表示
b = binascii.b2a_hex(a) # w对应ascII是0x77;o对应ascII是0x6f...以此类摧
print(b)
#与b2a_hex相反
print(binascii.a2b_hex(b))
#这个功能和b2a_hex()一样
c = binascii.hexlify(a)
print(c)
#这个功能和a2b_hex()一样
print(binascii.unhexlify(c))