small improvements

README.rst

@@ -226,7 +226,7 @@ To create an instance of the ``telegram.Bot``::
 
 To see if your credentials are successful::
 
-    >>> print bot.getMe()
+    >>> print(bot.getMe())
     {"first_name": "Toledo's Palace Bot", "username": "ToledosPalaceBot"}
 
 Bots can't initiate conversations with users. A user must either add them to a group or send them a message first. People can use ``telegram.me/<bot_username>`` links or username search to find your bot.
@@ -234,12 +234,12 @@ Bots can't initiate conversations with users. A user must either add them to a g
 To fetch text messages sent to your Bot::
 
     >>> updates = bot.getUpdates()
-    >>> print [u.message.text for u in updates]
+    >>> print([u.message.text for u in updates])
 
 To fetch images sent to your Bot::
 
     >>> updates = bot.getUpdates()
-    >>> print [u.message.photo for u in updates if u.message.photo]
+    >>> print([u.message.photo for u in updates if u.message.photo])
 
 To reply messages you'll always need the chat_id::
 

telegram/ext/dispatcher.py

@@ -639,7 +639,7 @@ class Dispatcher:
         Dispatches an error.
 
         Args:
-            update (any): The pdate that caused the error
+            update (any): The update that caused the error
             error (telegram.TelegramError): The Telegram error that was raised.
         """
 

telegram/utils/request.py

@@ -83,7 +83,7 @@ def _try_except_req(func):
 
             if errcode in (401, 403):
                 raise Unauthorized()
-            if errcode == 502:
+            elif errcode == 502:
                 raise NetworkError('Bad Gateway')
 
             try: