【独家发布】【kindle】Python核心编程(第2版)

1. #!/usr/bin/env python
   
2. 
   
3. from socket import *
   
4. from time import ctime
   
5. 
   
6. HOST = ''
   
7. PORT = 21567
   
8. BUFSIZ = 1024
   
9. ADDR = (HOST, PORT)
   
10. 
    
11. tcpSerSock = socket(AF_INET, SOCK_STREAM)
    
12. tcpSerSock.bind(ADDR)
    
13. tcpSerSock.listen(5)
    
14. 
    
15. while True:
    
16.     print 'waiting for connection...'
    
17.     tcpCliSock, addr = tcpSerSock.accept()
    
18.     print '...connected from:', addr
    
19. 
    
20.     while True:
    
21.         data = tcpCliSock.recv(BUFSIZ)
    
22.         if not data:
    
23.             break
    
24.         tcpCliSock.send('[%s] %s' % (
    
25.             ctime(), data))
    
26. 
    
27.     tcpCliSock.close()
    
28. tcpSerSock.close()

复制代码

1. #!/usr/bin/env python
   
2. 
   
3. from SocketServer import (TCPServer as TCP,
   
4.     StreamRequestHandler as SRH)
   
5. from time import ctime
   
6. 
   
7. HOST = ''
   
8. PORT = 21567
   
9. ADDR = (HOST, PORT)
   
10. 
    
11. class MyRequestHandler(SRH):
    
12.     def handle(self):
    
13.         print '...connected from:', self.client_address
    
14.         self.wfile.write('[%s] %s' % (ctime(),
    
15.             self.rfile.readline()))
    
16. 
    
17. tcpServ = TCP(ADDR, MyRequestHandler)
    
18. print 'waiting for connection...'
    
19. tcpServ.serve_forever()

复制代码

1. #!/usr/bin/env python
   
2. 
   
3. from twisted.internet import protocol, reactor
   
4. from time import ctime
   
5. 
   
6. PORT = 21567
   
7. 
   
8. class TSServProtocol(protocol.Protocol):
   
9.     def connectionMade(self):
   
10.         clnt = self.clnt = self.transport.getPeer().host
    
11.         print '...connected from:', clnt
    
12.     def dataReceived(self, data):
    
13.         self.transport.write('[%s] %s' % (
    
14.             ctime(), data))
    
15. 
    
16. factory = protocol.Factory()
    
17. factory.protocol = TSServProtocol
    
18. print 'waiting for connection...'
    
19. reactor.listenTCP(PORT, factory)
    
20. reactor.run()

复制代码

1. #!/usr/bin/env python
   
2. 
   
3. from socket import *
   
4. 
   
5. HOST = 'localhost'
   
6. PORT = 21567
   
7. BUFSIZ = 1024
   
8. ADDR = (HOST, PORT)
   
9. 
   
10. udpCliSock = socket(AF_INET, SOCK_DGRAM)
    
11. 
    
12. while True:
    
13.     data = raw_input('> ')
    
14.     if not data:
    
15.         break
    
16.     udpCliSock.sendto(data, ADDR)
    
17.     data, ADDR = udpCliSock.recvfrom(BUFSIZ)
    
18.     if not data:
    
19.         break
    
20.     print data
    
21. 
    
22. udpCliSock.close()

复制代码

1. #!/usr/bin/env python
   
2. 
   
3. from socket import *
   
4. from time import ctime
   
5. 
   
6. HOST = ''
   
7. PORT = 21567
   
8. BUFSIZ = 1024
   
9. ADDR = (HOST, PORT)
   
10. 
    
11. udpSerSock = socket(AF_INET, SOCK_DGRAM)
    
12. udpSerSock.bind(ADDR)
    
13. 
    
14. while True:
    
15.     print 'waiting for message...'
    
16.     data, addr = udpSerSock.recvfrom(BUFSIZ)
    
17.     udpSerSock.sendto('[%s] %s' % (
    
18.         ctime(), data), addr)
    
19.     print '...received from and returned to:', addr
    
20. 
    
21. udpSerSock.close()

复制代码

1. #!/usr/bin/env python
   
2. 
   
3. import ftplib
   
4. import os
   
5. import socket
   
6. 
   
7. HOST = 'ftp.mozilla.org'
   
8. DIRN = 'pub/mozilla.org/webtools'
   
9. FILE = 'bugzilla-LATEST.tar.gz'
   
10. 
    
11. def main():
    
12.     try:
    
13.         f = ftplib.FTP(HOST)
    
14.     except (socket.error, socket.gaierror), e:
    
15.         print 'ERROR: cannot reach "%s"' % HOST
    
16.         return
    
17.     print '*** Connected to host "%s"' % HOST
    
18. 
    
19.     try:
    
20.         f.login()
    
21.     except ftplib.error_perm:
    
22.         print 'ERROR: cannot login anonymously'
    
23.         f.quit()
    
24.         return
    
25.     print '*** Logged in as "anonymous"'
    
26. 
    
27.     try:
    
28.         f.cwd(DIRN)
    
29.     except ftplib.error_perm:
    
30.         print 'ERROR: cannot CD to "%s" folder' % DIRN
    
31.         f.quit()
    
32.         return
    
33.     print '*** Changed to "%s" folder' % DIRN
    
34. 
    
35.     try:
    
36.         f.retrbinary('RETR %s' % FILE,
    
37.             open(FILE, 'wb').write)
    
38.     except ftplib.error_perm:
    
39.         print 'ERROR: cannot read file "%s"' % FILE
    
40.         if os.path.exists(FILE): os.unlink(FILE)
    
41.     else:
    
42.         print '*** Downloaded "%s" to CWD' % FILE
    
43.     f.quit()
    
44.     return
    
45. 
    
46. if __name__ == '__main__':
    
47.     main()

复制代码

1. #!/usr/bin/env python
   
2. 
   
3. import nntplib
   
4. import socket
   
5. 
   
6. HOST = 'your.nntp.sersper'
   
7. GRNM = 'comp.lang.python'
   
8. USER = 'wesley'
   
9. PASS = "you'llNeverGuess"
   
10. 
    
11. def main():
    
12. 
    
13.     try:
    
14.         n = nntplib.NNTP(HOST)
    
15.         #user=USER, password=PASS)
    
16.     except socket.gaierror, e:
    
17.         print 'ERROR: cannot reach host "%s"' % HOST
    
18.         print '    ("%s")' % eval(str(e))[1]
    
19.         return
    
20.     except nntplib.NNTPPermanentError, e:
    
21.         print 'ERROR: access denied on "%s"' % HOST
    
22.         print '    ("%s")' % str(e)
    
23.         return
    
24.     print '*** Connected to host "%s"' % HOST
    
25. 
    
26.     try:
    
27.         rsp, ct, fst, lst, grp = n.group(GRNM)
    
28.     except nntplib.NNTPTemporaryError, e:
    
29.         print 'ERROR: cannot connect to group "%s"' % GRNM
    
30.         print '    ("%s")' % str(e)
    
31.         print '    Server may require authentication'
    
32.         print '    Uncomment/edit login line above'
    
33.         n.quit()
    
34.         return
    
35.     except nntplib.NNTPTemporaryError, e:
    
36.         print 'ERROR: group "%s" unavailable' % GRNM
    
37.         print '    ("%s")' % str(e)
    
38.         n.quit()
    
39.         return
    
40.     print '*** Found newsgroup "%s"' % GRNM
    
41. 
    
42.     rng = '%s-%s' % (lst, lst)
    
43.     rsp, frm = n.xhdr('from', rng)
    
44.     rsp, sub = n.xhdr('subject', rng)
    
45.     rsp, dat = n.xhdr('date', rng)
    
46.     print '''*** Found last article (#%s):
    
47.     From: %s
    
48.     Subject: %s
    
49.     Date: %s
    
50. '''% (lst, frm[0][1], sub[0][1], dat[0][1])
    
51. 
    
52.     rsp, anum, mid, data = n.body(lst)
    
53.         displayFirst20(data)
    
54.     n.quit()
    
55. 
    
56. def displayFirst20(data):
    
57.     print '*** First (<= 20) meaningful lines:\n'
    
58.     count = 0
    
59.     lines = (line.rstrip() for line in data)
    
60.     lastBlank = True
    
61.     for line in lines:
    
62.         if line:
    
63.             lower = line.lower()
    
64.             if (lower.startswith('>') and not \
    
65.                                 lower.startswith('>>>')) or \
    
66.                 lower.startswith('|') or \
    
67.                 lower.startswith('in article') or \
    
68.                 lower.endswith('writes:') or \
    
69.                 lower.endswith('wrote:'):
    
70.                 continue
    
71.         if not lastBlank or (lastBlank and line):
    
72.             print '    %s' % line
    
73.             if line:
    
74.                 count += 1
    
75.                 lastBlank = False
    
76.             else:
    
77.                 lastBlank = True
    
78.         if count == 20:
    
79.             break
    
80. 
    
81. if __name__ == '__main__':
    
82.     main()

复制代码

1. #!/usr/bin/env python
   
2. 
   
3. from smtplib import SMTP
   
4. from poplib import POP3
   
5. from time import sleep
   
6. 
   
7. SMTPSVR = 'smtp.python.is.cool'
   
8. POP3SVR = 'pop.python.is.cool'
   
9. 
   
10. origHdrs = ['From: wesley@python.is.cool',
    
11.     'To: wesley@python.is.cool',
    
12.     'Subject: test msg']
    
13. origBody = ['xxx', 'yyy', 'zzz']
    
14. origMsg = '\r\n\r\n'.join(['\r\n'.join(origHdrs), '\r\n'.join(origBody)])
    
15. 
    
16. sendSvr = SMTP(SMTPSVR)
    
17. errs = sendSvr.sendmail('wesley@python.is.cool',
    
18.     ('wesley@python.is.cool', ), origMsg)
    
19. sendSvr.quit()
    
20. assert len(errs) == 0, errs
    
21. sleep(10)    # wait for mail to be delivered
    
22. 
    
23. recvSvr = POP3(POP3SVR)
    
24. recvSvr.user('wesley')
    
25. recvSvr.pass_('youllNeverGuess')
    
26. rsp, msg, siz = recvSvr.retr(recvSvr.stat()[0])
    
27. # strip headers and compare to orig msg
    
28. sep = msg.index('')
    
29. recvBody = msg[sep+1:]
    
30. assert origBody == recvBody # assert identical

复制代码

I am learning python, hope it will be helpful

谢谢楼主分享