From 761547e71d85dcc0fbb3cfce97e3f479cb74b358 Mon Sep 17 00:00:00 2001
From: neutronnnate <nate@neutroninteractive.com>
Date: Tue, 25 Oct 2016 11:30:05 -0600
Subject: [PATCH] Issue 422: Fixed start_polling with clean=True can cause 'Too
 Many Requests' error from Telegram. (#437)

---
 telegram/ext/updater.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/telegram/ext/updater.py b/telegram/ext/updater.py
index 91e184da2..c64bad23a 100644
--- a/telegram/ext/updater.py
+++ b/telegram/ext/updater.py
@@ -330,6 +330,7 @@ class Updater(object):
                     # Disable webhook for cleaning
                     self.bot.setWebhook(webhook_url='')
                     self._clean_updates()
+                    sleep(1)
 
                 self.bot.setWebhook(webhook_url=webhook_url, certificate=cert)
             except (Unauthorized, InvalidToken):