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Added warning when adding an update_handler is added but no workers are alive

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This commit is contained in:
JosXa 2017-10-07 15:57:45 +02:00
parent 3805aa3772
commit 3d7c68ea2e
1 changed files with 4 additions and 0 deletions
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4
telethon/telegram_bare_client.py
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@ -1,6 +1,7 @@
import logging import logging
import os import os
import threading import threading
import warnings
from datetime import timedelta, datetime from datetime import timedelta, datetime
from hashlib import md5 from hashlib import md5
from io import BytesIO from io import BytesIO
@ -733,6 +734,9 @@ class TelegramBareClient:
def add_update_handler(self, handler): def add_update_handler(self, handler):
"""Adds an update handler (a function which takes a TLObject, """Adds an update handler (a function which takes a TLObject,
an update, as its parameter) and listens for updates""" an update, as its parameter) and listens for updates"""
if not self.updates.get_workers:
warnings.warn("There are no update workers running, so adding an update handler will have no effect.")
sync = not self.updates.handlers sync = not self.updates.handlers
self.updates.handlers.append(handler) self.updates.handlers.append(handler)
if sync: if sync: