get_from_email.py

email_body = """From someone@gmail.com  Sun Mar 15 01:04:01 2009 
Return-Path: <someone@gmail.com> 
X-Original-To: someone@somewhere.com 
Delivered-To: someone@somewhere.com 
Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=209.85.218.176; \
    helo=mail-bw0-f176.google.com; envelope-f$ 
X-DKIM: Sendmail DKIM Filter v2.8.1 sth-ubuntu 289CF31836A 
Authentication-Results: sth-ubuntu; dkim=pass (1024-bit key) 
        header.i=@gmail.com; dkim-adsp=none 
Received: from mail-bw0-f176.google.com (mail-bw0-f176.google.com [209.85.218.176]) 
        by sth-ubuntu (Postfix) with ESMTP id 289CF31836A 
        for <someone@somewhere.com>; Sun, 15 Mar 2009 01:04:01 +0000 (GMT) 
Received: by bwz24 with SMTP id 24so577769bwz.36 
        for <someone@somewhere.com>; Sat, 14 Mar 2009 18:04:00 -0700 (PDT) 
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; 
        d=gmail.com; s=gamma; 
        h=domainkey-signature:mime-version:received:date:message-id:subject 
         :from:to:content-type; 
        bh=VT5A/8PKj6A/kR4H5fBL0q93EEdaTMm9WS0QOKrkqNY=; 
        b=ktI1CS4hEh7F31pTQqNVnU7GudFpjnJi8TsGpd2rdLRR5T4lCaYiDENJS2Tx/VFC0x 
         I6n4T7/VTFqujTAqm6ud+XywrkHELxNZmIv2fmBjo3BjxyxCuhDabQBtESUnDgvl9sfo 
         m+pp2WmkbfnwGVwIqOgyal6Wd7NavbXT7sdiw= 
DomainKey-Signature: a=rsa-sha1; c=nofws; 
        d=gmail.com; s=gamma; 
        h=mime-version:date:message-id:subject:from:to:content-type; 
        b=fVMt5O2UxxunpZDC0AYPE6X1eDgwK0uFw8N7yh52L6rmbnNQDwe9nKQn1bMkLeTgpU 
         TM9eHm5/y1qWNheK1b9lCA6ok0cn5yQ8eJvSqSGzDJMUKtJ7Gsxg7cpgBXCVgxFB+Ki/ 
         KXv2Cr7g8FokZFpLqgXwvZ15NQORTWzQutnTE= 
MIME-Version: 1.0 
Received: by 10.103.227.13 with SMTP id e13mr1376219mur.20.1237079040537; Sat, 
        14 Mar 2009 18:04:00 -0700 (PDT) 
Date: Sun, 15 Mar 2009 01:04:00 +0000 
Message-ID: <a33f028c0903141804y3a1e2caaqf6674561905db44e@mail.gmail.com> 
Subject: Test 
From: Me <someone@gmail.com> 
To: metc@79.97.116.138 
Content-Type: multipart/mixed; boundary=001636765a6ac5370f04651de87b 

--001636765a6ac5370f04651de87b 
Content-Type: text/plain; charset=UTF-8 
Content-Transfer-Encoding: 7bit 


-- 

me 

--001636765a6ac5370f04651de87b 
Content-Type: application/octet-stream; 
        name="filename.file" 
Content-Disposition: attachment; 
        filename="filename.file" 
Content-Transfer-Encoding: base64 
X-Attachment-Id: f_fsb0wyiy0 

ZDg6YW5ub3VuY2U0MDpodHRwOi8vdHJhY2tlci50aGVwaXJhdGViYXkub3JnL2Fubm91bmNlMTM6 
YW5ub3VuY2UtbGlzdGxsNDA6aHR0cDovL3RyYWNrZXIudGhlcGlyYXRlYmF5Lm9yZy9hbm5vdW5j 
ZWVsNDI6dWRwOi8vdHJhY2tlci50aGVwaXJhdGViYXkub3JnOjgwL2Fubm91bmNlZWw0MjpodHRw 
Oi8vZGVuaXMuc3RhbGtlci5oM3EuY29tOjY5NjkvYW5ub3VuY2VlbDQxOnVkcDovL2RlbmlzLnN0 
YWxrZXIuaDNxLmNvbTo2OTY5L2Fubm91bmNlZWw0Mzp1ZHA6Ly90cmFja2VyMi50b3JyZW50Ym94 
[snipped the rest] 
--001636765a6ac5370f04651de87b--
"""

import email
import re

rx = re.compile(r'(?P<name>.*)<(?P<email>.*)>')

e = email.message_from_string(email_body)
matches = rx.match(e.get('from'))
from_addr = matches.group('email')