[置顶] Python_bug收集_TypeError:'str' does not support the buffer interface

参考链接：http://blog.csdn.net/chuanchuan608/article/details/17915959
感谢原作者
如有侵权，立删

源文件：
server.py

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import socket
from time import ctime

HOST=socket.gethostname()
PORT=12345
BUFSIZE=1024
ADDR=(HOST,PORT)

tcpSerSock=socket.socket()
tcpSerSock.bind(ADDR)
tcpSerSock.listen(5)
while True:
        print ("waitting for connection...")
        tcpCliSock,addr=tcpSerSock.accept()
        print('...connected from:', addr)

        while True:
                data=tcpCliSock.recv(BUFSIZE)
                if not data:
                        break
                else:
                        print ('recece data:from hostName=%s hostIp&Port=%s ' % (HOST,addr),data)
                        tcpCliSock.send(('[%s] %s' % (ctime(),data)))
                tcpCliSock.close()
tcpSerSock.close()

client.py

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import socket
from time import ctime

HOST=socket.gethostname()
PORT=12345
BUFSIZE=1024
ADDR=(HOST,PORT)

tcpCliSock=socket.socket()
tcpCliSock.connect(ADDR)
while True:
    data = input('please input > ')    
    if not data:
        break
    tcpCliSock.send("data")
    data = tcpCliSock.recv(BUFSIZE)
    if not data:
        break
    print(data)

tcpCliSock.close()

报错：
TypeError:’str’ does not support the buffer interface

网络大神帮助
In python 3, bytes strings and unicodestrings are now two different types. Since sockets are not aware of string encodings, they are using raw bytes strings, that have a slightly differentinterface from unicode strings.
So, now, whenever you have a unicode stringthat you need to use as a byte string, you need toencode() it. And whenyou have a byte string, you need to decode it to use it as a regular(python 2.x) string.
Unicode strings are quotes enclosedstrings. Bytes strings are b”” enclosed strings

When you use client_socket.send(data),replace it by client_socket.send(data.encode()). When you get datausing data = client_socket.recv(512), replace it by data =client_socket.recv(512).decode()

同时我看了一下python帮助文档：
Codec.encode(input[, errors])
Encodes the object input and returns atuple (output object, length consumed). Encoding converts a string object to abytes object using a particular character set encoding

Codec.decode(input[, errors])
Decodes the object input and returns atuple (output object, length consumed). Decoding converts a bytes objectencoded using a particular character set encoding to a string object.
input must be a bytes object or one whichprovides the read-only character buffer interface – for example, buffer objectsand memory mapped files.

修改后文件：
修改内容
send()内容追加.encode()
recv()内容追加.decode()
server.py

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import socket
from time import ctime

HOST=socket.gethostname()
PORT=12345
BUFSIZE=1024
ADDR=(HOST,PORT)

tcpSerSock=socket.socket()
tcpSerSock.bind(ADDR)
tcpSerSock.listen(5)
while True:
    print ("waitting for connection...")
    tcpCliSock,addr=tcpSerSock.accept()
    print('...connected from:', addr) 

    while True:
        data=tcpCliSock.recv(BUFSIZE).decode()
        if not data:
            break
        else:
            print ('recece data:from hostName=%s hostIp&Port=%s ' % (HOST,addr),data)
            tcpCliSock.send(('[%s] %s' % (ctime(),data)).encode())
        tcpCliSock.close()
tcpSerSock.close()

client.py

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import socket
from time import ctime

HOST=socket.gethostname()
PORT=12345
BUFSIZE=1024
ADDR=(HOST,PORT)

tcpCliSock=socket.socket()
tcpCliSock.connect(ADDR)
while True:  
    data = input('please input > ') 
    if not data: 
        break  
    tcpCliSock.send(data.encode())
    data = tcpCliSock.recv(BUFSIZE).decode() 
    if not data: 
        break  
    print(data) 

tcpCliSock.close()

同时 UDP 和socketserver模块 都是同样的解决办法