Beginner Python3, do an email example, although know to do very slag, or share it
POP3 protocol
POP3 Full name Post official Protocol3, the third version of the Post Office Protocol, provides a mail server for connecting personal computers to the Internet and an electronic protocol for downloading e-mail, which is the first offline standard for Internet electronic protocols, POP3 allows users to store messages from the server to a local host (personal computer) while deleting messages saved on the mail server, while the POP3 server is a mail server that follows the POP3 protocol to receive e-mail.
Python3 Support POP3 module is poplib: Establish a connection (to initialize the POP3), username/password authentication, get mail information/download mail/delete mail processing, exit and update processing.
POP3 protocol model and processing is very intuitive, get to the message after the parsing message is major problem!
The code is as follows
ImportPoplib
ImportSys
fromImportlibImportReload
fromEmail.parserImportParser
fromEmail.parserImportBytesparser
fromEmail.headerImportDecode_header
fromEmail.utilsImportParseaddr
ImportEmail.iterators
#parse a string in a message header
defDECODE_STR (s):
Value, CharSet = Decode_header (s) [0]
ifCharSet
Value = Value.decode (CharSet)
returnValue
#save a message attachment or content to a file
#the attachment data in the message is written to the attachment file
defSaveFile (filename, data, path):
Try:
filepath = path + filename
Print('Save as:'+ filepath)
f = open (filepath,'WB')
except:
Print(filepath +'Open Failed')
#f.close ()
Else:
F.write (data)
F.close ()
#gets the character encoding of the message, first looking for the encoding in the message, if not, looking in the header's Content-type
defGuess_charset (msg):
CharSet = Msg.get_charset ()
ifCharSet isNone:
Content_Type = Msg.get ('Content-type',"'). Lower ()
pos = Content_type.find ('charset=')
ifPOS >= 0:
CharSet = Content_type[pos+8:].strip ()
returnCharSet
#functions that parse the message, first print the recipient, sender, title
#The walk of the message is then called to loop through each sub-object (including text, HTML, attachments one or more times) in the messages
#The filename in the message header attribute is present, the child object is an attachment, the attachment name is encoded and the attachment is downloaded to the specified directory
#since messages transmitted over the network are encoded in a later format, you need to specify decode=true at Get_payload to convert to an output encoding
#if the message is in text or HTML format, print the format and output the sub-object content after transcoding
defPrint_info (msg):
forHeaderinch[' from',' to','Subject']:
Value = Msg.get (header,"')
ifValue
ifHeader = ='Subject':
Value = Decode_str (value)
Else:
HDR, addr = parseaddr (value)
Name = Decode_str (addr)
Value = name +'<'+ addr +'>'
Print(Header +':'+ value)
forPartinchMsg.walk ():
filename = Part.get_filename ()
Content_Type = Part.get_content_type ()
CharSet = Guess_charset (part)
ifFileName
filename = decode_str (filename)
data = part.get_payload (decode = True)
ifFileName! = NoneorFileName! ="':
Print('Accessory:'+ filename)
SaveFile (filename, data, mypath)
Else:
Email_content_type ="'
Content ="'
ifContent_Type = ='Text/plain':
Email_content_type ='text'
elifContent_Type = ='text/html':
Email_content_type ='HTML'
ifCharSet
Content = Part.get_payload (decode=true). Decode (CharSet)
Print(Email_content_type +' '+ content)
email ='[email protected]'
Password ='email_passwd'
Pop3_server ='pop.163.com'
MyPath ='d://email/'
Server = Poplib. POP3 (Pop3_server, 110)
#print (Server.getwelcome ())
Server.user (email)
Server.pass_ (password)
Print('Message:%s. Size:%s'% Server.stat ())
RESP, mails, objects = Server.list ()
#print (mails)
index = len (mails)
#Take out all the information of a single message
RESP, lines, octets = SERVER.RETR (index)
#message is bytes, converted to parser supported STR
Lists = []
forEinchLines
Lists.append (E.decode ())
Msg_content ='\ r \ n'. Join (Lists)
msg = Parser (). PARSESTR (Msg_content)
Print_info (msg)
#Server.dele (Index)
#submit operation information and exit
Server.quit ()
"Python3" POP3 agreement to receive mail
