处理编码信息与Python和imaplib
https://stackoverflow.com//questions/25007366
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在过去几天我一直在写剧本，分析自动产生的帮助台票和存储其内容的数据库。测试时我遇到了几个电子邮件，看来是编码而造成的剧本是要失败的。下面是一个例子之一RFC822s:
"[(b'9255(RFC822{12558}'，b'Delivered：XXXXXXXXX Received:通过10.220.77.132与SMTP id g4csp176213vck; Mon,28日2014年09:37:05-0700(PDT) -x-收到：通过10.67.30.130与SMTP id ke2mr39896936pad.44.1406565425185; Mon,28日2014年09:37:05-0700(PDT) Return-路径： Received:从XXXXXXXXX(XXXXXXXXX[74.125.149.112]) 通过XXXXXXXXX与SMTP id yh3si18379315pab.170.2014.07.28.09.37.04 ； Mon,28日2014年09:37:04-0700(PDT) Received-SPF：没有(XXXXXXXXX:XXXXXXXXX不指定允许发送者主持)的客户机-ip=74.125.149.141; Authentication-结果：XXXXXXXXX; spf=中性(XXXXXXXXX:XXXXXXXXX不指定允许发送者主持)v Received:从XXXXXXXXX([74.125.149.141])通过XXXXXXXXX([74.125.148.10])与SMTP; Mon,28日2014 16:37:04GMT Received:从XXXXXXXXX([209.85.213.178])(使用TLSv1)通过XXXXXXXXX([74.125.148.12])与SXXXXXXXXX;Mon,28日2014年09:37:04PDT Received:通过XXXXXXXXX与SMTP id uq10sf3897971igb.11 ；Mon,28日2014年09:37:03-0700(PDT) -x-谷歌器-签署：v=1;a=rsa-sha256;c=轻松/放松; d=1e100.net;s=20130820; h=x-gm-消息国家：mime-version:自：日期：主题：信息-id :x-原始发送者:x-原来认证的-结果：优先级 ：邮寄名单：名单-id：列表的职位：列助：列-档案 ：列-取消订阅:content-type:内容传送编码; bh=H+FlcmWQAFURCHnDFK/bNHUOvofUAPB8bcDYlBceyxE=; b=LoR8D1MK8eoDG9DLkP9gkfR82+EGUIEeOTLpqymqxyx9HJl0C9BW6iwPD7ogrjfbv4 xWYumML6RCinpcZc4d6VCDSw+akXLdhiol+lbWJBZWvgN4BQPgHJwCF6EaHYf3h8j4tq /KAZIkXowz4/WKW8STri4BVjlA2a4LPwV/wazP+I9Kvr1yz433ymd+iCY1V0NexTI+cb 9m3IyL8sqB0+Efyu+XQrR2y7ZdXDPwdzGS/WNHJBtKga5xPDtPga+21pozVMCbuCc/cj Cx9me6cVo19PrNKIOtSimDZ1u6ELdpVr4ipryqsat8aryyicphje34ofplqsptxjm1ei ngyg== -x-Gm-消息国家：ALoCoQkb908wRLWedDE+CtRzjD6VwC6Nja6duttyoVAdf+TFFn+uCxFB0Kwd5jk411YWdMD2G6HuFeRj2y3q7ezte/vTvPLfymDIkHwZQa1r1zQ8I1B254t6v01ourr8inf/41aPGnnD X-Received:通过10.42.48.74与SMTP id r10mr26049776icf.18.1406565423564; Mon,28日2014年09:37:03-0700(PDT) -x-收到：通过10.42.48.74与SMTP id r10mr26049775icf.18.1406565423537; Mon,28日2014年09:37:03-0700(PDT) -x-BeenThere:XXXXXXXXX Received:通过10.50.153.15与SMTP id vc15ls1961411igb.42.gmail;Mon,28Jul 2014年09:37:03-0700(PDT) -x-收到：通过10.66.254.37与SMTP id af5mr39703901pad.113.1406565423331; Mon,28日2014年09:37:03-0700(PDT) Received:从XXXXXXXXX(XXXXXXXXX[74.125.149.158]) 通过XXXXXXXXX与SMTP id da9si9190520pdb.425.2014.07.28.09.37.02 ； Mon,28日2014年09:37:03-0700(PDT) Received-SPF：没有(XXXXXXXXX:XXXXXXXXX不指定允许发送者主持)的客户机-ip=207.211.31.47; Received:从XXXXXXXXX([207.211.31.47])通过XXXXXXXXX([74.125.148.10])与SMTP; Mon,28日2014 16:37:02GMT Received:从XXXXXXXXX(XXXXXXXXX [129.135.112.43])(使用TLS)通过XXXXXXXXX;Mon,28Jul 2014年12:37:01-0400 Received:从XXXXXXXXX(129.135.128.210)通过XXXXXXXXX (129.135.112.45)与Microsoft SMTP Server id14.3.181.6;Mon,28日2014年 11:36:58-0500 Received:从ITSDC50([127.0.0.1])通过XXXXXXXXX与微软 SMTPSVC(6.0.3790.4675); Mon,28日2014年11:36:58-0500 MIME-Version:1.0 From: : Date:Mon,28日2014年11:36:58-0500 Subject:派遣这/关心的情况：SC-118656-7031 Message-ID: -x-OriginalArrivalTime:28Jul2014 16:36:58.0498(UTC)FILETIME=[26792E20:01CFAA82] -x-MC-独一无二的：114072812370105901 -x-换的水平：(S:85.19264/99.90000 简历：99.9000FC：95.5390LC：95.5390R:95.9108 P:95.9108 M:97.0282 C:98.6951 ) -x-换器:0skipped:未启用 -x-换设置：1(0.1500:0.1500)简历gt6gt5gt4gt3gt2gt1 -x-换地址：从[1094/49] -x-换nxpr:disp=中性的，envrcpt=XXXXXXXXX -x-换浦:bodyHash=9500f76054cf97c2a0eec20f8940768958faf6c3,headerHash=eb9362a172738328a8b8a8ae406c42a63f5545f9,键名=4,rcptHash=e0dd4695780dcb1818e78b482447ac976870bcbe,品支持并采用访问策略语言=207.211.31.47,version=1 -x-原始发送者：XXXXXXXXX -x-原来认证的-结果：XXXXXXXXX;防晒指数=性 (XXXXXXXXX:XXXXXXXXX不指定允许发送者 主持)smtp。邮件=XXXXXXXXX Precedence:表 Mailing-清单：表XXXXXXXXX接触XXXXXXXXX List-ID: -x-谷歌-Group Id:511158325204 List-职：, List-帮助：, List-档案： List-取消订阅:, Content-Type:text/plain；charset=UTF-8 Content-Transfer-Encoding:base64 -x-换海王星:于0/0/0.00/0 -x-换的水平：(S:65.87536/99.90000 简历：99.9000FC：95.5390LC：95.5390R:95.9108 P:95.9108 M:97.0282 C:98.6951 ) -x-换器:0skipped:未启用 -x-换设置：5(2.0000:0.0200)s cv fc lc gt6gt5gt4GT3gt2gt1英尺lt r p m c -x-换地址：从[db-null] -x-换nxpr:disp=中性的，envrcpt=XXXXXXXXX -x-换浦:bodyHash=45f4f2e59005199791055b3d1f937e1d3fb7d7ca, headerHash=ca981838d5783da04d9d38e3fffc3f5907100fcf, keyName=4, rcptHash=4f3dee680a09495dc5b095849a4225f49c4a45f4, sourceip=74.125.149.141, version=1 Q2FzZSBOdW1iZXI6ICAgICAgICAgU0MtMTE4NjU2LTcwMzENClNldmVyaXR5IExldmVsOiAg ICAgIE5vcm1hbA0KQWNjb3VudCBOYW1lOiAgICAgICAgSENSIE1hbm9yY2FyZQ0KU2l0ZSBO YW1lOiAgICAgICAgICAgMzAxDQpDbGllbnQgTmFtZTogICAgICAgICBBbWFuZGEgUGVucm9k DQpDbGllbnQgUGhvbmU6ICAgICAgICANCkNsaWVudCBNYWlsUGF0aDogICAgIGFtYW5kYS5w ZW5yb2RAaGNyLW1hbm9yY2FyZS5jb20NCkNhc2UgUHJvZHVjdDogICAgICAgIEhDUi1GaWVs ZCBEZXBsb3ltZW50DQpDYXNlIEtleXdvcmQ6ICAgICAgICBGRC1BU0QNCg0KDQoNClBsZWFz ZSBDbGljayBCZWxvdyB0byBVcGRhdGUgQ2FzZTogDQoNCg0KUHJvYmxlbSBEZXNjcmlwdGlv bg0KKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioq KioqKioqKioNCjw8LSBUaGlzIENhc2UgaXMgYSBTdWItQ2FzZSBvZjogRU0tMTE4NjU2LTcw MTcgIC0+Pg0KDQpQbGVhc2UgZGlzcGF0Y2ggd2lyaW5nIHRlY2ggdG8gaW5zdGFsbCB0d28g bmV3IG5ldHdvcmsgZHJvcHMuIE9uZSBpbiB0aGUgTnVyc2UgTWFuYWdlIE9mZmljZSBhbmQg b25lIGluIHRoZSBDYXNlIE1hbmFnZW1lbnQgT2ZmaWNlDQoNCkxvY2F0aW9uIG9mIGRyb3Ag aXM6ICAgICAgIE51cnNlIE1hbmFnZXIgT2ZmaWNlICYgQ2FzZSBNYW5hZ2VtZW50IE9mZmlj 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是身体的电子邮件编码的?如果那样,我应该怎么处理解码吗？
解决方案
身体是编码(内容Transfer-Encoding:base64)，这是不一样的，因为加密的。粘贴的第一组字进入一个在线解码器
Q2FzZSBOdW1iZXI6ICAgICAgICAgU0MtMTE4NjU2LTcwMzENClNldmVyaXR5IExldmVsOiAg
得到的解码为
Case Number: SC-118656-7031
Severity Level:
蟒蛇有库base64decode，但我会失望的如果imaplib没有一个系统简化了这一点。
其他提示
你可以使用 email 包这一点。你有一个列表那里，和第一个项目的清单元组成，其中第二个要素是整个电子邮件信息。让我们说你有那个字节的对象在一个变量所谓 msg_bytes.然后你可以分析的消息的使用：
import email.parser
msg = email.parser.BytesParser().parsebytes(msg_bytes)
然后你可以访问不同的部件的消息(参阅文件 email.message.Message):
# get a bytes object containing the base64-decoded message
textbytes = msg.get_payload(decode=True)
# get the content charset
content_charset = msg.get_content_charset()
# decode the text to obtain a string object
text = textbytes.decode(content_charset)
这将能够处理大多数情况下，如果不是所有的、有效的电子邮件。
尝试 Imbox, 在这里你不需要修复解码器
因 imaplib 是一个非常过度的低水平图书馆和返回的结果是困难的工作
安装
pip install imbox
使用
from imbox import Imbox
with Imbox('imap.gmail.com',
username='username',
password='password',
ssl=True,
ssl_context=None,
starttls=False) as imbox:
all_inbox_messages = imbox.messages()
for uid, message in all_inbox_messages:
message.sent_from
message.sent_to
message.body
