python實現收郵件判斷模塊poplib，email

一、代碼

# 輸入郵件地址, 口令和POP3服務器地址:
import datetime
import email
import poplib
import email.policy
from email.parser import Parser
flag=False

emailaddress = '******'
# 注意使用開通POP，SMTP等的授權碼
password = '*******'
pop3_server = '*******'

# 連接到POP3服務器:
server = poplib.POP3(pop3_server)
# 可以打開或關閉調試信息:
# server.set_debuglevel(1)
# POP3服務器的歡迎文字:
print(server.getwelcome())

# 身份認證:
server.user(self.emailaddress)
server.pass_(self.password)

# stat()返回郵件數量和占用空間:
messagesCount, messagesSize = server.stat()
print('messagesCount:', messagesCount)
print('messagesSize:', messagesSize)
# list()返回所有郵件的編號:
resp, mails, octets = server.list()
print("resp:", resp)
print("mails:", mails)
print("octets:", octets)

length = len(mails)

print(length)

for i in range(length):
    i=length-i
    resp, lines, octets = server.retr(i)
    msg_content=b'\r\n'.join(lines)
    msg = email.parser.BytesParser(policy=email.policy.default).parsebytes(msg_content)
    print('發件人', msg['from'])
    print('收件人', msg['to'])
    print('主題', msg['subject'])
    print('第一個收件人用戶名', msg['to'].addresses[0].username)
    print('第一個發件人用戶名', msg['from'].addresses[0].username)
    theme= msg['subject']
    email_content=[part.get_content() for part in msg.walk() if part.get_content_maintype() == 'text'][0]
    if theme=="啟動查庫任務分派機器人" and email_content==datetime.datetime.now().strftime("%Y%m%d"):
        flag=True
        break

server.quit()
print(flag)

二、解決編碼問題

import chardet

#繼承重寫解析類
class BytesParser_new(email.parser.BytesParser):
    def parsebytes(self, text, headersonly=False):
        import chardet
        encoding=chardet.detect(text).get("encoding")
        text = text.decode(encoding, errors='surrogateescape')
        return self.parser.parsestr(text, headersonly)

msg = BytesParser_new(policy=email.policy.default).parsebytes(msg_content)

三、代碼封裝

import email
import poplib
import email.policy


class ReadEmail(object):
    def __init__(self, emailaddress, password, pop3_server):
        self.emailaddress = emailaddress
        self.password = password
        self.pop3_server = pop3_server
        self.server = poplib.POP3(pop3_server)

    def login(self):
        # 可以打開或關閉調試信息:
        self.server.set_debuglevel(1)
        # POP3服務器的歡迎文字:
        print(self.server.getwelcome())
        # 身份認證:
        self.server.user(emailaddress)
        self.server.pass_(password)

    def read(self):
        self.login()
        # stat()返回郵件數量和占用空間:
        messagesCount, messagesSize = self.server.stat()
        print('messagesCount:', messagesCount)
        print('messagesSize:', messagesSize)
        # list()返回所有郵件的編號:
        resp, mails, octets = self.server.list()
        print("resp:", resp)
        print("mails:", mails)
        print("octets:", octets)
        length = len(mails)
        print(length)

        for i in range(1, length):
            resp, lines, octets = self.server.retr(i)
            msg_content = b'\r\n'.join(lines)
            msg = email.parser.BytesParser(policy=email.policy.default).parsebytes(msg_content)
            # print('發件人', msg['from'])
            # print('收件人', msg['to'])
            print('主題', msg['subject'])
            # print('第一個收件人用戶名', msg['to'].addresses[0].username)
            # print('第一個發件人用戶名', msg['from'].addresses[0].username)
            theme = msg['subject']
            email_content = [part.get_content() for part in msg.walk() if part.get_content_maintype() == 'text'][0]
            if theme == "系統退信/The email is returned":
                self.server.dele(i)
                print("刪除郵件成功：", msg['subject'])

        self.server.quit()


if __name__ == '__main__':
    emailaddress = '********'
    # 注意使用開通POP，SMTP等的授權碼
    password = '********'
    pop3_server = 'imap.qq.com'
    rm=ReadEmail(emailaddress,password ,pop3_server )
    rm.read()

四、github最新smtplib代碼

進一步對發送模塊smtplib進行了封裝，歡迎大家提意見

https://github.com/fengfumin/EasyMail