#!/usr/bin/env python

# -*- coding:utf-8 -*-

__author__ = 'MFC'

__time__ = '18/6/29 14:06'

"""

Effective Python编写高质量Python代码的59个有效方法 P6

第3条 了解bytes、str、unicode的区别

Python3 bytes(包含原始8位，等价Python2的str) -- 原始8位:由于每个字节有8个二进制位，故是原始的8位

Python3 str(包含Unicode字符)

Python3

bytes.decode('utf-8') -> str

str.encode('utf-8') -> bytes

Python编程：编解码放在界面最外围来做，程序核心部分应该使用Unicode字符类型，且不要对字符编码做任何假设。

"""

def to_str(bytes_or_str):

if isinstance(bytes_or_str, bytes):

value = bytes_or_str.decode('utf-8')

else:

value = bytes_or_str

return value # Instance of str

def to_bytes(bytes_or_str):

if isinstance(bytes_or_str, str):

value = bytes_or_str.encode('utf-8')

else:

value = bytes_or_str

return value # Instance of bytes

if __name__ == '__main__':

print('str to bytes:')

text1 = '编程'

print(type(text1))

text1u = to_bytes(text1)

print(type(text1u))

print(text1u) # bytes

print('bytes to str:')

text2 = b'\xe7\xbc\x96\xe7\xa8\x8b'

print(type(text2))

text2u = to_str(text2)

print(type(text2u))

print(text2u) # str