Adding echobot example and fix IOError typo

examples/echobot.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+
+'''Simple Bot to reply Telegram messages'''
+
+import telegram
+import time
+
+# Telegram Bot Authorization Token
+bot = telegram.Bot('120405045:AAEAQ3EcfZ3NztkUbOkMOwCxXdDikEW1VZE')
+
+# This will be our global variable to keep the latest update_id when requesting
+# for updates. It starts with the latest update_id available.
+LAST_UPDATE_ID = bot.getUpdates()[-1].update_id
+
+
+def echo():
+    global LAST_UPDATE_ID
+
+    # Request updates from last updated_id
+    for update in bot.getUpdates(offset=LAST_UPDATE_ID):
+        if LAST_UPDATE_ID < update.update_id:
+            # chat_id is required to reply any message
+            chat_id = update.message.chat_id
+            message = update.message.text
+
+            if (message):
+                # Reply the message
+                bot.sendMessage(chat_id=chat_id,
+                                text=message)
+
+                # Updates global offset to get the new updates
+                LAST_UPDATE_ID = update.update_id
+
+
+if __name__ == '__main__':
+    while True:
+        echo()
+        time.sleep(5)

telegram/bot.py

@@ -589,7 +589,9 @@ class Bot(object):
                         url,
                         urllib.urlencode(data)
                     ).read()
-            except urllib.IOError as e:
+            except IOError as e:
+                raise TelegramError(str(e))
+            except urllib2.HTTPError as e:
                 raise TelegramError(str(e))
             except urllib2.URLError as e:
                 raise TelegramError(str(e))