【发布时间】：2013-05-27 18:28:35
【问题描述】：
我使用的下一个脚本用于使用 IMAP IDLE 侦听 IMAP 连接，并且严重依赖于线程。对我来说消除踏板调用并只使用主线程的最简单方法是什么？
作为一个新的 python 开发人员，我尝试编辑 def __init__(self, conn): 方法，但得到的错误越来越多
代码示例对我有很大帮助
#!/usr/local/bin/python2.7
print "Content-type: text/html\r\n\r\n";
import socket, ssl, json, struct, re
import imaplib2, time
from threading import *
# enter gmail login details here
USER="username@gmail.com"
PASSWORD="password"
# enter device token here
deviceToken = 'my device token x x x x x'
deviceToken = deviceToken.replace(' ','').decode('hex')
currentBadgeNum = -1
def getUnseen():
(resp, data) = M.status("INBOX", '(UNSEEN)')
print data
return int(re.findall("UNSEEN (\d)*\)", data[0])[0])
def sendPushNotification(badgeNum):
global currentBadgeNum, deviceToken
if badgeNum != currentBadgeNum:
currentBadgeNum = badgeNum
thePayLoad = {
'aps': {
'alert':'Hello world!',
'sound':'',
'badge': badgeNum,
},
'test_data': { 'foo': 'bar' },
}
theCertfile = 'certif.pem'
theHost = ('gateway.push.apple.com', 2195)
data = json.dumps(thePayLoad)
theFormat = '!BH32sH%ds' % len(data)
theNotification = struct.pack(theFormat, 0, 32,
deviceToken, len(data), data)
ssl_sock = ssl.wrap_socket(socket.socket(socket.AF_INET,
socket.SOCK_STREAM), certfile=theCertfile)
ssl_sock.connect(theHost)
ssl_sock.write(theNotification)
ssl_sock.close()
print "Sent Push alert."
# This is the threading object that does all the waiting on
# the event
class Idler(object):
def __init__(self, conn):
self.thread = Thread(target=self.idle)
self.M = conn
self.event = Event()
def start(self):
self.thread.start()
def stop(self):
# This is a neat trick to make thread end. Took me a
# while to figure that one out!
self.event.set()
def join(self):
self.thread.join()
def idle(self):
# Starting an unending loop here
while True:
# This is part of the trick to make the loop stop
# when the stop() command is given
if self.event.isSet():
return
self.needsync = False
# A callback method that gets called when a new
# email arrives. Very basic, but that's good.
def callback(args):
if not self.event.isSet():
self.needsync = True
self.event.set()
# Do the actual idle call. This returns immediately,
# since it's asynchronous.
self.M.idle(callback=callback)
# This waits until the event is set. The event is
# set by the callback, when the server 'answers'
# the idle call and the callback function gets
# called.
self.event.wait()
# Because the function sets the needsync variable,
# this helps escape the loop without doing
# anything if the stop() is called. Kinda neat
# solution.
if self.needsync:
self.event.clear()
self.dosync()
# The method that gets called when a new email arrives.
# Replace it with something better.
def dosync(self):
print "Got an event!"
numUnseen = getUnseen()
sendPushNotification(numUnseen)
# Had to do this stuff in a try-finally, since some testing
# went a little wrong.....
while True:
try:
# Set the following two lines to your creds and server
M = imaplib2.IMAP4_SSL("imap.gmail.com")
M.login(USER, PASSWORD)
M.debug = 4
# We need to get out of the AUTH state, so we just select
# the INBOX.
M.select("INBOX")
numUnseen = getUnseen()
sendPushNotification(numUnseen)
typ, data = M.fetch(1, '(RFC822)')
raw_email = data[0][1]
import email
email_message = email.message_from_string(raw_email)
print email_message['Subject']
#print M.status("INBOX", '(UNSEEN)')
# Start the Idler thread
idler = Idler(M)
idler.start()
# Sleep forever, one minute at a time
while True:
time.sleep(60)
except imaplib2.IMAP4.abort:
print("Disconnected. Trying again.")
finally:
# Clean up.
#idler.stop() #Commented out to see the real error
#idler.join() #Commented out to see the real error
#M.close() #Commented out to see the real error
# This is important!
M.logout()
【问题讨论】：
标签： python ios python-2.7