Python IMAP Idle Problem

import imaplib2
from threading import *
import email
import re
import sys
import ConfigParser
import io
import time
import os

# wait for an event of imaplib2
class Idler(object):
	def __init__(self, conn):
		self.thread = Thread(target=self.idle)
		self.M = conn
		self.event = Event()

	def mail_handle():
		for part in msg.walk():
			print ("2");  
			if part.get_content_maintype() == 'multipart':  
				continue
			if part.get('Content-Disposition') is None:  
				continue
			if (attachment_save == '1'):  
			# save attachment in program-folder
				filename = attachment_file;
				fp = open(filename, 'wb');  
				fp.write(part.get_payload(decode=True));
				fp.close();
				print ('%s saved!' % filename);  
			# informations about email-body
			data = part.get_payload(decode=True);
			if (html_mail == '1'):  
				# delete HTML-tags
				plaintext = re.sub("<.*?>", "", data);  
			if not data:
				continue;
			if (mail_save == '1'):  
				# save mail-content in text-file
				f = open(mail_file, 'w');  
				f.write(plaintext);
				f.close();
			# mark mails as seen
			con.store(num, '+FLAGS', '\Seen');  
 
	def start(self):
		self.thread.start()
 
	def stop(self):
		self.event.set()
 
	def join(self):
		self.thread.join()
 
	def idle(self):
        # endless loop
		while True:
			# stop loop, when stop() is called
			if self.event.isSet():
				return;
			self.needsync = False;
			# a callback-methode, when a new mail arrives
			def callback(args):
				print("6");  
				if not self.event.isSet():
					self.needsync = True;
					self.event.set();
				# execute Idle-Call
				self.M.idle(callback=callback)
				self.event.wait();
				if self.needsync:
					self.event.clear();
					self.dosync();
 
	# will be called, when a new mail arrives
	def dosync(self):
		typ, data = con.search(None, 'UNSEEN');  
		c = 0;
		print ("3");  
		for num in data.split():
			typ, data = con.fetch(num, '(RFC822)')  
			c +=1;
			text = data[1];
			msg = email.message_from_string(text);
			# filter mail, Case sensitive
			if (subject_check == "1" and from_check == "1"):  
				if (subject_contains in msg['subject'] and subject_contains in msg['from']):  
					mail_handle();
		
			elif (subject_check == "1" and from_check != "1"):  
				if (subject_contains in msg['subject']):  
					mail_handle();

			elif (subject_check != '1' and from_check == '1'):  
				if (subject_contains in msg['from']):  
					mail_handle();
 
try:
	try:
		from configparser import RawConfigParser
	except ImportError:
		from ConfigParser import RawConfigParser  # ver. < 3.0

	# initialice
	config = RawConfigParser();

	# config-file
	configFilePath = '/home/daniel/Downloads/config.cfg';  
	config.read(configFilePath);

	# getting variable
	server = config.get('E_Mail', 'server');  
	port = config.getint('E_Mail', 'port');  
	name = config.get('E_Mail', 'name');  
	password = config.get('E_Mail', 'password');  
	folder = config.get('E_Mail', 'folder');  
	subject_check = config.getint('E_Mail', 'subject_check');  
	subject_contains = config.get('E_Mail', 'subject_contains');  
	from_check = config.getint('E_Mail', 'from_check');  
	from_contains = config.get('E_Mail', 'from_contains');  
	html_mail = config.getint('E_Mail', 'html_mail');  
	attachment_save = config.getint('E_Mail', 'attachment_save');  
	attachment_file = config.get('E_Mail', 'attachment_file');  
	mail_save = config.getint('E_Mail', 'mail_save');  
	mail_file = config.get('E_Mail', 'mail_file');  
	minutes = config.getint('E_Mail', 'minutes');  
	run_file = config.get('E_Mail', 'run_file');  

	# account
	con = imaplib2.IMAP4_SSL(server, port);
	con.login(name, password);
	# choose folder
	con.select(folder);
	# start "Idler" 
	idler = Idler(con);
	idler.start();
	# quit and new connection
	time.sleep(1*60);
	
finally:
	#cleaning
	idler.stop();
	idler.join();
	con.close();
	con.logout();

[E_Mail]
server = imap.server.de
port = 993
name = mail@domain.de
password = password
folder = INBOX
subject_check = 1
subject_contains = Test
from_check = 1
from_contains = .de
html_mail = 1
attachment_save = 1
attachment_file = /home/user/attachment.pdf
mail_save = 1
mail_file = /home/user/latest-mail.txt
minutes = 5
run_file = /home/user/start.sh