How to use the twython.core.AuthError function in twython

def unsubscribeFromList(self, list_id, version):
		""" unsubscribeFromList(self, list_id, version)

			Unsubscribe the authenticated user from the list in question (must be public).

			Parameters:
				list_id - Required. The list to unsubscribe from.
				version (number) - Optional. API version to request. Entire Twython class defaults to 1, but you can override on a function-by-function or class basis - (version=2), etc.
		"""
		if self.authenticated is True:
			try:
				return simplejson.load(self.opener.open("http://api.twitter.com/%d/%s/%s/following.json" % (version, self.username, list_id), "_method=DELETE"))
			except HTTPError, e:
				raise TwythonError("unsubscribeFromList() failed with a %d error code." % e.code, e.code)
		else:
			raise AuthError("unsubscribeFromList() requires you to be authenticated.")

Parameters:
				since_id - Optional.  Returns only statuses with an ID greater than (that is, more recent than) the specified ID.
				max_id - Optional.  Returns only statuses with an ID less than (that is, older than) or equal to the specified ID. 
				count - Optional.  Specifies the number of statuses to retrieve. May not be greater than 200.  
				page - Optional. Specifies the page of results to retrieve. Note: there are pagination limits.
				version (number) - Optional. API version to request. Entire Twython class defaults to 1, but you can override on a function-by-function or class basis - (version=2), etc.
		"""
		version = version or self.apiVersion
		if self.authenticated is True:
			try:
				retweetURL = self.constructApiURL("http://api.twitter.com/%d/statuses/retweets_of_me.json" % version, kwargs)
				return simplejson.load(self.opener.open(retweetURL))
			except HTTPError, e:
				raise TwythonError("retweetedOfMe() failed with a %s error code." % `e.code`, e.code)
		else:
			raise AuthError("retweetedOfMe() requires you to be authenticated.")

if description is not None:
				if len(list(description)) < 160:
					if useAmpersands is True:
						updateProfileQueryString += "&" + urllib.urlencode({"description": self.unicode2utf8(description)})
					else:
						updateProfileQueryString += urllib.urlencode({"description": self.unicode2utf8(description)})
				else:
					raise TwythonError("Twitter has a character limit of 160 for all descriptions. Try again.")

			if updateProfileQueryString != "":
				try:
					return self.opener.open("http://api.twitter.com/%d/account/update_profile.json?" % version, updateProfileQueryString)
				except HTTPError, e:
					raise TwythonError("updateProfile() failed with a %s error code." % `e.code`, e.code)
		else:
			raise AuthError("updateProfile() requires you to be authenticated.")

""" deleteList(self, list_id, version)

			Deletes a list for the authenticating user. 

			Parameters:
				list_id - Required. The name of the list to delete - this gets turned into a slug, so you can pass it as that, or hope the transformation works out alright.
				version (number) - Optional. API version to request. Entire Twython class defaults to 1, but you can override on a function-by-function or class basis - (version=2), etc.
		"""
		version = version or self.apiVersion
		if self.authenticated is True:
			try:
				return simplejson.load(self.opener.open("http://api.twitter.com/%d/%s/lists/%s.json" % (version, self.username, list_id), "_method=DELETE"))
			except HTTPError, e:
				raise TwythonError("deleteList() failed with a %d error code." % e.code, e.code)
		else:
			raise AuthError("deleteList() requires you to be authenticated.")

Parameters:
				id - Required.  The numerical ID of the tweet you want the retweets of.
				count - Optional.  Specifies the number of retweets to retrieve. May not be greater than 100.
				version (number) - Optional. API version to request. Entire Twython class defaults to 1, but you can override on a function-by-function or class basis - (version=2), etc.
		"""
		version = version or self.apiVersion
		if self.authenticated is True:
			apiURL = "http://api.twitter.com/%d/statuses/retweets/%s.json" % (version, `id`)
			if count is not None:
				apiURL += "?count=%s" % `count`
			try:
				return simplejson.load(self.opener.open(apiURL))
			except HTTPError, e:
				raise TwythonError("getRetweets failed with a %s eroror code." % `e.code`, e.code)
		else:
			raise AuthError("getRetweets() requires you to be authenticated.")

image - Required. Must be a valid GIF, JPG, or PNG image of less than 700 kilobytes in size. Images with width larger than 500 pixels will be scaled down.
				version (number) - Optional. API version to request. Entire Twython class defaults to 1, but you can override on a function-by-function or class basis - (version=2), etc.
		"""
		version = version or self.apiVersion
		if self.authenticated is True:
			try:
				files = [("image", filename, open(filename, 'rb').read())]
				fields = []
				content_type, body = self.encode_multipart_formdata(fields, files)
				headers = {'Content-Type': content_type, 'Content-Length': str(len(body))}
				r = urllib2.Request("http://api.twitter.com/%d/account/update_profile_image.json" % version, body, headers)
				return self.opener.open(r).read()
			except HTTPError, e:
				raise TwythonError("updateProfileImage() failed with a %d error code." % e.code, e.code)
		else:
			raise AuthError("You realize you need to be authenticated to change a profile image, right?")

""" showLists(self, version)

			Show all the lists for the currently authenticated user (i.e, they own these lists).
			(Note: This may encounter issues if you authenticate with an email; try username (screen name) instead).

			Parameters:
				version (number) - Optional. API version to request. Entire Twython class defaults to 1, but you can override on a function-by-function or class basis - (version=2), etc.
		"""
		version = version or self.apiVersion
		if self.authenticated is True:
			try:
				return simplejson.load(self.opener.open("http://api.twitter.com/%d/%s/lists.json" % (version, self.username)))
			except HTTPError, e:
				raise TwythonError("showLists() failed with a %d error code." % e.code, e.code)
		else:
			raise AuthError("showLists() requires you to be authenticated.")

Parameters:
				list_id - Required. The name of the list to get a timeline for - this gets turned into a slug, so you can pass it as that, or hope the transformation works out alright.
				since_id - Optional.  Returns only statuses with an ID greater than (that is, more recent than) the specified ID.
				max_id - Optional.  Returns only statuses with an ID less than (that is, older than) or equal to the specified ID. 
				count - Optional.  Specifies the number of statuses to retrieve. May not be greater than 200.
				cursor - Optional. Breaks the results into pages. Provide a value of -1 to begin paging. 
					Provide values returned in the response's "next_cursor" and "previous_cursor" attributes to page back and forth in the list.
				version (number) - Optional. API version to request. Entire Twython class defaults to 1, but you can override on a function-by-function or class basis - (version=2), etc.
		"""
		version = version or self.apiVersion
		try:
			baseURL = self.constructApiURL("http://api.twitter.com/%d/%s/lists/%s/statuses.json" % (version, self.username, list_id), kwargs)
			return simplejson.load(self.opener.open(baseURL + "&cursor=%s" % cursor))
		except HTTPError, e:
			if e.code == 404:
				raise AuthError("It seems the list you're trying to access is private/protected, and you don't have access. Are you authenticated and allowed?")
			raise TwythonError("getListTimeline() failed with a %d error code." % e.code, e.code)

def getSavedSearches(self, version = None):
		"""getSavedSearches()

			Returns the authenticated user's saved search queries.

			Parameters:
				version (number) - Optional. API version to request. Entire Twython class defaults to 1, but you can override on a function-by-function or class basis - (version=2), etc.
		"""
		version = version or self.apiVersion
		if self.authenticated is True:
			try:
				return simplejson.load(self.opener.open("http://api.twitter.com/%d/saved_searches.json" % version))
			except HTTPError, e:
				raise TwythonError("getSavedSearches() failed with a %s error code." % `e.code`, e.code)
		else:
			raise AuthError("getSavedSearches() requires you to be authenticated.")

Parameters:
				since_id - Optional.  Returns only statuses with an ID greater than (that is, more recent than) the specified ID.
				max_id - Optional.  Returns only statuses with an ID less than (that is, older than) or equal to the specified ID. 
				count - Optional.  Specifies the number of statuses to retrieve. May not be greater than 200.  
				page - Optional. Specifies the page of results to retrieve. Note: there are pagination limits.
				version (number) - Optional. API version to request. Entire Twython class defaults to 1, but you can override on a function-by-function or class basis - (version=2), etc.
		"""
		version = version or self.apiVersion
		if self.authenticated is True:
			try:
				homeTimelineURL = self.constructApiURL("http://api.twitter.com/%d/statuses/home_timeline.json" % version, kwargs)
				return simplejson.load(self.opener.open(homeTimelineURL))
			except HTTPError, e:
				raise TwythonError("getHomeTimeline() failed with a %s error code. (This is an upcoming feature in the Twitter API, and may not be implemented yet)" % `e.code`)
		else:
			raise AuthError("getHomeTimeline() requires you to be authenticated.")