Foundations of Python Network Programming 978-1-4302-3004-5

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CHAPTER 15 ■ IMAP » » print def explore_message(c, uid): » """Let the user view various parts of a given message.""" » msgdict = c.fetch(uid, ['BODYSTRUCTURE', 'FLAGS']) » while True: » » print » » print 'Flags:', » » flaglist = msgdict[uid]['FLAGS'] » » if flaglist: » » » print ' '.join(flaglist) » » else: » » » print 'none' » » display_structure(msgdict[uid]['BODYSTRUCTURE']) » » print » » reply = raw_input('Message %s - type a part name, or "q" to quit: ' » » » » » » % uid).strip() » » print » » if reply.lower().startswith('q'): » » » break » » key = 'BODY[%s]' % reply » » try: » » » msgdict2 = c.fetch(uid, [key]) » » except c._imap.error: » » » print 'Error - cannot fetch section %r' % reply » » else: » » » content = msgdict2[uid][key] » » » if content: » » » » print banner » » » » print content.strip() » » » » print banner » » » else: » » » » print '(No such section)' def explore_folder(c, name): » """List the messages in folder `name` and let the user choose one.""" » while True: » » c.select_folder(name, readonly=True) » » msgdict = c.fetch('1:*', ['BODY.PEEK[HEADER.FIELDS (FROM SUBJECT)]', » » » » » » » » 'FLAGS', 'INTERNALDATE', 'RFC822.SIZE']) » » print » » for uid in sorted(msgdict): » » » items = msgdict[uid] » » » print '%6d %20s %6d bytes %s' % ( » » » » uid, items['INTERNALDATE'], items['RFC822.SIZE'], » » » » ' '.join(items['FLAGS'])) » » » for i in items['BODY[HEADER.FIELDS (FROM SUBJECT)]'].splitlines(): » » » » print ' ' * 6, i.strip() » » reply = raw_input('Folder %s - type a message UID, or "q" to quit: ' » » » » » » % name).strip() » » if reply.lower().startswith('q'): 254
CHAPTER 15 ■ IMAP » » » break » » try: » » » reply = int(reply) » » except ValueError: » » » print 'Please type an integer or "q" to quit' » » else: » » » if reply in msgdict: » » » » explore_message(c, reply) » c.close_folder() def explore_account(c): » """Display the folders in this IMAP account and let the user choose one.""" » while True: » » print » » folderflags = {} » » data = c.list_folders() » » for flags, delimiter, name in data: » » » folderflags[name] = flags » » for name in sorted(folderflags.keys()): » » » print '%-30s %s' % (name, ' '.join(folderflags[name])) » » print » » reply = raw_input('Type a folder name, or "q" to quit: ').strip() » » if reply.lower().startswith('q'): » » » break » » if reply in folderflags: » » » explore_folder(c, reply) » » else: » » » print 'Error: no folder named', repr(reply) if __name__ == '__main__': » explore_account(c) You can see that the outer function uses a simple list_folders() call to present the user with a list of his or her mail folders, like some of the program listings we have seen already. Each folder’s IMAP flags are also displayed. This lets the program give the user a choice between folders: INBOX \HasNoChildren Receipts \HasNoChildren Travel \HasNoChildren Work \HasNoChildren Type a folder name, or "q" to quit: Once a user has selected a folder, things become more interesting: a summary has to be printed for each message. Different e-mail clients make different choices about what information to present about each message in a folder; Listing 15–7 chooses to select a few header fields together with the message’s date and size. Note that it is careful to use BODY.PEEK instead of BODY to fetch these items, since the IMAP server would otherwise mark the messages as \Seen merely because they had been displayed in a summary! The results of this fetch() call are printed to the screen once an e-mail folder has been selected: 2703 2010-09-28 21:32:13 19129 bytes \Seen 255
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Foundations of Python Network Progr
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To the Python community for creatin
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Contents ■Contents at a Glance ..
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■ CONTENTS Asking getaddrinfo() W
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■ CONTENTS Using Message Queues f
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■ CONTENTS Parsing Dates ........
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■ CONTENTS Telnet ...............
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About the Authors ■ Brandon Craig
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Acknowledgements This book owes its
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■ INTRODUCTION If you do know som
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C H A P T E R 1 ■ ■ ■ Introdu
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CHAPTER 1 ■ INTRODUCTION TO CLIEN
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C H A P T E R 2 ■ ■ ■ UDP The
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CHAPTER 2 ■ UDP server with SSH.
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CHAPTER 2 ■ UDP them anywhere in
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CHAPTER 2 ■ UDP command-line argu
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CHAPTER 2 ■ UDP » » » » raise
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CHAPTER 2 ■ UDP world itself give
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CHAPTER 2 ■ UDP socket that is no
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CHAPTER 2 ■ UDP So binding to an
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CHAPTER 2 ■ UDP s.connect((hostna
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CHAPTER 2 ■ UDP else: » print >>
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C H A P T E R 3 ■ ■ ■ TCP The
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CHAPTER 3 ■ TCP situation), and t
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CHAPTER 3 ■ TCP » reply = recv_a
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CHAPTER 3 ■ TCP guess when the in
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CHAPTER 3 ■ TCP the system has no
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CHAPTER 3 ■ TCP » » » print '\
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CHAPTER 3 ■ TCP $ python tcp_dead
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CHAPTER 3 ■ TCP Using TCP Streams
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CHAPTER 4 ■ SOCKET NAMES AND DNS
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CHAPTER 5 ■ NETWORK DATA AND NETW
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C H A P T E R 6 ■ ■ ■ TLS and
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CHAPTER 6 ■ TLS AND SSL systems a
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CHAPTER 6 ■ TLS AND SSL • He wi
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CHAPTER 6 ■ TLS AND SSL discussio
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CHAPTER 6 ■ TLS AND SSL • The s
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CHAPTER 6 ■ TLS AND SSL The Links
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C H A P T E R 7 ■ ■ ■ Server
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CHAPTER 7 ■ SERVER ARCHITECTURE P
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CHAPTER 7 ■ SERVER ARCHITECTURE
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CHAPTER 7 ■ SERVER ARCHITECTURE N
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CHAPTER 7 ■ SERVER ARCHITECTURE L
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CHAPTER 7 ■ SERVER ARCHITECTURE F
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CHAPTER 7 ■ SERVER ARCHITECTURE p
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CHAPTER 7 ■ SERVER ARCHITECTURE N
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CHAPTER 7 ■ SERVER ARCHITECTURE L
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CHAPTER 7 ■ SERVER ARCHITECTURE s
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CHAPTER 7 ■ SERVER ARCHITECTURE c
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C H A P T E R 8 ■ ■ ■ Caches,
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CHAPTER 8 ■ CACHES, MESSAGE QUEUE
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C H A P T E R 9 ■ ■ ■ HTTP Th
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CHAPTER 9 ■ HTTP Here, the URL sp
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CHAPTER 9 ■ HTTP Relative URLs Ve
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CHAPTER 9 ■ HTTP From now on, I a
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CHAPTER 9 ■ HTTP • 303 See Othe
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CHAPTER 9 ■ HTTP You cannot tell
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CHAPTER 9 ■ HTTP Instead of stuff
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CHAPTER 9 ■ HTTP POST And APIs Al
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CHAPTER 9 ■ HTTP Content Type Neg
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CHAPTER 9 ■ HTTP HTTP Caching Man
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CHAPTER 9 ■ HTTP If the connectio
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CHAPTER 9 ■ HTTP >>> import cooki
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CHAPTER 9 ■ HTTP So the technique
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C H A P T E R 10 ■ ■ ■ Screen
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CHAPTER 10 ■ SCREEN SCRAPING Figu
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CHAPTER 10 ■ SCREEN SCRAPING cont
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CHAPTER 10 ■ SCREEN SCRAPING Thir
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CHAPTER 10 ■ SCREEN SCRAPING Ther
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CHAPTER 10 ■ SCREEN SCRAPING Beau
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CHAPTER 10 ■ SCREEN SCRAPING If y
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CHAPTER 10 ■ SCREEN SCRAPING Cond
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C H A P T E R 11 ■ ■ ■ Web Ap
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CHAPTER 11 ■ WEB APPLICATIONS Thi
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CHAPTER 11 ■ WEB APPLICATIONS But
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CHAPTER 11 ■ WEB APPLICATIONS the
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CHAPTER 11 ■ WEB APPLICATIONS •
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CHAPTER 11 ■ WEB APPLICATIONS hig
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CHAPTER 11 ■ WEB APPLICATIONS The
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CHAPTER 11 ■ WEB APPLICATIONS the
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CHAPTER 11 ■ WEB APPLICATIONS The
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C H A P T E R 12 ■ ■ ■ E-mail
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CHAPTER 12 ■ E-MAIL COMPOSITION A
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CHAPTER 12 ■ E-MAIL COMPOSITION A
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Page 236 and 237: C H A P T E R 13 ■ ■ ■ SMTP A
Page 238 and 239: CHAPTER 13 ■ SMTP anyway. Outgoin
Page 240 and 241: CHAPTER 13 ■ SMTP How SMTP Is Use
Page 242 and 243: CHAPTER 13 ■ SMTP This mechanism
Page 244 and 245: CHAPTER 13 ■ SMTP s = smtplib.SMT
Page 246 and 247: CHAPTER 13 ■ SMTP ETRN STARTTLS X
Page 248 and 249: CHAPTER 13 ■ SMTP » s = smtplib.
Page 250 and 251: CHAPTER 13 ■ SMTP exchange mail o
Page 252 and 253: CHAPTER 13 ■ SMTP username = sys.
Page 254 and 255: C H A P T E R 14 ■ ■ ■ POP PO
Page 256 and 257: CHAPTER 14 ■ POP ■ Caution! Whi
Page 258 and 259: CHAPTER 14 ■ POP finally: » p.qu
Page 260 and 261: CHAPTER 14 ■ POP Subject: Backup
Page 262 and 263: CHAPTER 15 ■ IMAP THE IMAP PROTOC
Page 264 and 265: CHAPTER 15 ■ IMAP '(\\HasNoChildr
Page 266 and 267: CHAPTER 15 ■ IMAP Examining Folde
Page 268 and 269: CHAPTER 15 ■ IMAP Listing 15-5. D
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Page 274 and 275: CHAPTER 15 ■ IMAP » From: Brando
Page 276 and 277: CHAPTER 15 ■ IMAP • \Flagged: T
Page 278 and 279: CHAPTER 15 ■ IMAP An IMAP message
Page 280 and 281: CHAPTER 15 ■ IMAP display or summ
Page 282 and 283: CHAPTER 16 ■ TELNET AND SSH cloud
Page 284 and 285: CHAPTER 16 ■ TELNET AND SSH Unix
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Page 292 and 293: CHAPTER 16 ■ TELNET AND SSH repla
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Page 310 and 311: CHAPTER 17 ■ FTP The biggest prob
Page 312 and 313: CHAPTER 17 ■ FTP f.login() print
Page 314 and 315: CHAPTER 17 ■ FTP if os.path.exist
Page 316 and 317: CHAPTER 17 ■ FTP f = FTP(host) f.
Page 318 and 319: CHAPTER 17 ■ FTP Windows servers
Page 320 and 321: CHAPTER 17 ■ FTP » try: » » f.
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C H A P T E R 18 ■ ■ ■ RPC Re
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CHAPTER 18 ■ RPC sort of proxy ex
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CHAPTER 18 ■ RPC The SimpleXMLRPC
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CHAPTER 18 ■ RPC Traceback (most
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CHAPTER 18 ■ RPC 8.0 If this
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CHAPTER 18 ■ RPC Note that the po
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CHAPTER 18 ■ RPC up being, simply
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CHAPTER 18 ■ RPC such as Python i
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CHAPTER 18 ■ RPC • Google Proto
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■ INDEX mod_python, 194 Qpid, 131
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■ INDEX Common Gateway Interface.
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■ INDEX international characters
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■ INDEX front-end web servers, 17
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■ INDEX deleting folders, 260 del
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■ INDEX mechanize, 138, 163 Memca
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■ INDEX pausing terminal output,
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■ INDEX resources. See also RFCs
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■ INDEX shutdown(), 48 shutting d
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■ INDEX terminals, 270-74 bufferi
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■ INDEX ■ V validating cached r
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