[Tutor] Use python to parse the subject line of emails, listen for and react to commands

[Willie Sims]

I have started working with 2.7 simply because I don't know when the error
is caused by me or because of version issues.
This is how far I have gotten, 
I can access and pull emails that only come from a selected email address
(OWNER)
I have it parsed down to print the subject only
And I have it saving the string to a file output.txt
And I have it deleting the emails so they don't reread, 
Now I want to eval the output.txt and act on the keyword that is written,,
each key word will be a python script name. So if I sent in the subject line
"status"
It saves the word as status.py in output.txt, then at the bottom I tried
eval output.txt but get the error
 
Traceback (most recent call last):
  File "C:\Python27\New folder\start.py", line 82, in <module>
    start_command = eval(open("output.txt").read())
  File "<string>", line 1, in <module>
NameError: name 'test' is not defined


import sys
import imaplib
import getpass
import email
import email.header
import datetime

EMAIL_ACCOUNT = "myemail at gmail.com"
EMAIL_FOLDER = "INBOX"
OWNER = "willie14228 at outlook.com"
COMMAND_FILE = open("output.txt","w")

def process_mailbox(M):
    rv, data = M.search(None, "From", (OWNER))
    if rv != 'OK':
        print "No messages found!"
        return
    for num in data[0].split():
        rv, data = M.fetch(num, '(RFC822)')
        if rv != 'OK':
            print "ERROR getting message", num
            return
        msg = email.message_from_string(data[0][1])
        decode = email.header.decode_header(msg['Subject'])[0]
        subject = unicode(decode[0])
        print 'Message %s: %s' % (num, subject)
COMMAND_FILE.write('%s' % (subject))
        COMMAND_FILE.close()
        #print 'Raw Date:', msg['Date']
M = imaplib.IMAP4_SSL('imap.gmail.com')
try:
    rv, data = M.login(EMAIL_ACCOUNT, getpass.getpass())
except imaplib.IMAP4.error:
    print "LOGIN FAILED!!! "
    sys.exit(1)
print rv, data
rv, mailboxes = M.list()
if rv == 'OK':
    print "Mailboxes:"
    print mailboxes
rv, data = M.select(EMAIL_FOLDER)
if rv == 'OK':
    print "Processing mailbox...\n"
    process_mailbox(M)
    M.select('INBOX')  # select all trash
    M.store("1:*", '+FLAGS', '\\Deleted')  #Flag all Trash as Deleted
    M.expunge()
    M.close()
else:
    print "ERROR: Unable to open mailbox ", rv

M.logout()
start_command = eval(open("output.txt").read())


Traceback (most recent call last):
  File "C:\Python27\New folder\start.py", line 82, in <module>
    start_command = eval(open("output.txt").read())
  File "<string>", line 1, in <module>
NameError: name 'test' is not defined



-----Original Message-----
From: Tutor [mailto:tutor-bounces+willie14228=outlook.com at python.org] On
Behalf Of Alan Gauld
Sent: Thursday, February 26, 2015 6:18 PM
To: tutor at python.org
Subject: Re: [Tutor] Use python to parse the subject line of emails, listen
for and react to commands

On 26/02/15 20:51, Willie Sims wrote:
> I know py can parse emails,  but I cant figure out how to limit to 
> only
 > the subject and only if its in that certain format
> and only if its coming from a recognized email address

OK, Show us what you've tried. That makes it easier for us to see what is
tripping you up. Otherwise we are just guessing.

All 3 things you ask for can be done but we need a starting point and the
best one is your existing, but faulty, code.

> and since I'm using 3.4 it seems all the other kind of examples don't 
> work

A lot of old examples on the web will be for Python v32 and there are
significant differences to v3.

However, Python v3 has not lost any important functionality so whatever
worked in v2 can be made to work in v3. Again we just need a clue as to what
you are trying to do. (show us your code - and any error messages and tell
us your OS too)

--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
Follow my photo-blog on Flickr at:
http://www.flickr.com/photos/alangauldphotos


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