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All methods now raise tango exceptions; debug parameter is deprecated, header information is only reported back with HTTP code now

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This commit is contained in:
Ryan McGrath 2009-07-08 01:27:57 -04:00
parent b4f62e9420
commit e642c117a4
1 changed files with 83 additions and 165 deletions
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248
tango.py
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@ -17,11 +17,15 @@ from urllib2 import HTTPError
try:
import simplejson
except ImportError:
print "Tango requires the simplejson library to work. http://www.undefined.org/python/"
try:
import json as simplejson
except:
raise Exception("Tango requires the simplejson library (or Python 2.6) to work. http://www.undefined.org/python/")
try:
import oauth
except ImportError:
# Need to figure out a better way to signal that this is an optional thing
print "Tango requires oauth for authentication purposes. http://oauth.googlecode.com/svn/code/python/oauth/oauth.py"
class TangoError(Exception):
@ -31,13 +35,12 @@ class TangoError(Exception):
return repr(self.msg)
class setup:
def __init__(self, authtype = "OAuth", username = None, password = None, oauth_keys = None, debug = False):
def __init__(self, authtype = "OAuth", username = None, password = None, oauth_keys = None):
self.authtype = authtype
self.authenticated = False
self.username = username
self.password = password
self.oauth_keys = oauth_keys
self.debug = debug
if self.username is not None and self.password is not None:
if self.authtype == "OAuth":
pass
@ -50,8 +53,6 @@ class setup:
test_verify = simplejson.load(self.opener.open("http://twitter.com/account/verify_credentials.json"))
self.authenticated = True
except HTTPError, e:
if self.debug is True:
print e.headers
raise TangoError("Authentication failed with your provided credentials. Try again? (" + str(e.code) + " failure)")
# OAuth functions; shortcuts for verifying the credentials.
@ -72,9 +73,7 @@ class setup:
try:
return urllib2.urlopen(shortener + "?" + urllib.urlencode({query: url_to_shorten})).read()
except HTTPError, e:
if self.debug is True:
print e.headers
print "shortenURL() failed with a " + str(e.code) + " error code."
raise TangoError("shortenURL() failed with a %s error code." % `e.code`)
def constructApiURL(self, base_url, params):
return base_url + "?" + "&".join(["%s=%s" %(key, value) for (key, value) in params.iteritems()])
@ -87,19 +86,15 @@ class setup:
if self.authenticated is True:
return simplejson.load(self.opener.open("http://twitter.com/account/rate_limit_status.json"))
else:
print "You need to be authenticated to check for this."
raise TangoError("You need to be authenticated to check a rate limit status on an account.")
except HTTPError, e:
if self.debug is True:
print e.headers
print "It seems that there's something wrong. Twitter gave you a " + str(e.code) + " error code; are you doing something you shouldn't be?"
raise TangoError("It seems that there's something wrong. Twitter gave you a %s error code; are you doing something you shouldn't be?" % `e.code`)
def getPublicTimeline(self):
try:
return simplejson.load(urllib2.urlopen("http://twitter.com/statuses/public_timeline.json"))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getPublicTimeline() failed with a " + str(e.code) + " error code."
raise TangoError("getPublicTimeline() failed with a %s error code." % `e.code`)
def getFriendsTimeline(self, **kwargs):
if self.authenticated is True:
@ -107,11 +102,9 @@ class setup:
friendsTimelineURL = self.constructApiURL("http://twitter.com/statuses/friends_timeline.json", kwargs)
return simplejson.load(self.opener.open(friendsTimelineURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getFriendsTimeline() failed with a " + str(e.code) + " error code."
raise TangoError("getFriendsTimeline() failed with a %s error code." % `e.code`)
else:
print "getFriendsTimeline() requires you to be authenticated."
raise TangoError("getFriendsTimeline() requires you to be authenticated.")
def getUserTimeline(self, id = None, **kwargs):
if id is not None and kwargs.has_key("user_id") is False and kwargs.has_key("screen_name") is False:
@ -127,9 +120,8 @@ class setup:
else:
return simplejson.load(urllib2.urlopen(userTimelineURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "Failed with a " + str(e.code) + " error code. Does this user hide/protect their updates? If so, you'll need to authenticate and be their friend to get their timeline."
raise TangoError("Failed with a %s error code. Does this user hide/protect their updates? If so, you'll need to authenticate and be their friend to get their timeline."
% `e.code`)
def getUserMentions(self, **kwargs):
if self.authenticated is True:
@ -137,29 +129,23 @@ class setup:
mentionsFeedURL = self.constructApiURL("http://twitter.com/statuses/mentions.json", kwargs)
return simplejson.load(self.opener.open(mentionsFeedURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getUserMentions() failed with a " + str(e.code) + " error code."
raise TangoError("getUserMentions() failed with a %s error code." % `e.code`)
else:
print "getUserMentions() requires you to be authenticated."
raise TangoError("getUserMentions() requires you to be authenticated.")
def showStatus(self, id):
try:
return simplejson.load(self.opener.open("http://twitter.com/statuses/show/" + id + ".json"))
except HTTPError, e:
if self.debug is True:
print e.headers
print "Failed with a " + str(e.code) + " error code. Does this user hide/protect their updates? If so, you'll need to authenticate and be their friend to get their timeline."
raise TangoError("Failed with a %s error code. Does this user hide/protect their updates? You'll need to authenticate and be friends to get their timeline." % `e.code`)
def updateStatus(self, status, in_reply_to_status_id = None):
if self.authenticated is True:
if len(list(status)) > 140:
print "This status message is over 140 characters, but we're gonna try it anyway. Might wanna watch this!"
raise TangoError("This status message is over 140 characters. Trim it down!")
try:
return simplejson.load(self.opener.open("http://twitter.com/statuses/update.json?", urllib.urlencode({"status": status, "in_reply_to_status_id": in_reply_to_status_id})))
except HTTPError, e:
if self.debug is True:
print e.headers
raise TangoError("updateStatus() failed with a " + str(e.code) + "error code.")
else:
raise TangoError("updateStatus() requires you to be authenticated.")
@ -169,11 +155,9 @@ class setup:
try:
return simplejson.load(self.opener.open("http://twitter.com/status/destroy/" + id + ".json", "POST"))
except HTTPError, e:
if self.debug is True:
print e.headers
print "destroyStatus() failed with a " + str(e.code) + " error code."
raise TangoError("destroyStatus() failed with a %s error code." % `e.code`)
else:
print "destroyStatus() requires you to be authenticated."
raise TangoError("destroyStatus() requires you to be authenticated.")
def endSession(self):
if self.authenticated is True:
@ -181,9 +165,7 @@ class setup:
self.opener.open("http://twitter.com/account/end_session.json", "")
self.authenticated = False
except HTTPError, e:
if self.debug is True:
print e.headers
print "endSession failed with a " + str(e.code) + " error code."
raise TangoError("endSession failed with a %s error code." % `e.code`)
else:
print "You can't end a session when you're not authenticated to begin with."
@ -200,11 +182,9 @@ class setup:
try:
return simplejson.load(self.opener.open(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getDirectMessages() failed with a " + str(e.code) + " error code."
raise TangoError("getDirectMessages() failed with a %s error code." % `e.code`)
else:
print "getDirectMessages() requires you to be authenticated."
raise TangoError("getDirectMessages() requires you to be authenticated.")
def getSentMessages(self, since_id = None, max_id = None, count = None, page = "1"):
if self.authenticated is True:
@ -219,11 +199,9 @@ class setup:
try:
return simplejson.load(self.opener.open(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getSentMessages() failed with a " + str(e.code) + " error code."
raise TangoError("getSentMessages() failed with a %s error code." % `e.code`)
else:
print "getSentMessages() requires you to be authenticated."
raise TangoError("getSentMessages() requires you to be authenticated.")
def sendDirectMessage(self, user, text):
if self.authenticated is True:
@ -231,24 +209,20 @@ class setup:
try:
return self.opener.open("http://twitter.com/direct_messages/new.json", urllib.urlencode({"user": user, "text": text}))
except HTTPError, e:
if self.debug is True:
print e.headers
print "sendDirectMessage() failed with a " + str(e.code) + " error code."
raise TangoError("sendDirectMessage() failed with a %s error code." % `e.code`)
else:
print "Your message must be longer than 140 characters"
raise TangoError("Your message must not be longer than 140 characters")
else:
print "You must be authenticated to send a new direct message."
raise TangoError("You must be authenticated to send a new direct message.")
def destroyDirectMessage(self, id):
if self.authenticated is True:
try:
return self.opener.open("http://twitter.com/direct_messages/destroy/" + id + ".json", "")
except HTTPError, e:
if self.debug is True:
print e.headers
print "destroyDirectMessage() failed with a " + str(e.code) + " error code."
raise TangoError("destroyDirectMessage() failed with a %s error code." % `e.code`)
else:
print "You must be authenticated to destroy a direct message."
raise TangoError("You must be authenticated to destroy a direct message.")
def createFriendship(self, id = None, user_id = None, screen_name = None, follow = "false"):
if self.authenticated is True:
@ -262,13 +236,11 @@ class setup:
try:
return simplejson.load(self.opener.open(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "createFriendship() failed with a " + str(e.code) + " error code. "
if e.code == 403:
print "It seems you've hit the update limit for this method. Try again in 24 hours."
raise TangoError("You've hit the update limit for this method. Try again in 24 hours.")
raise TangoError("createFriendship() failed with a %s error code." % `e.code`)
else:
print "createFriendship() requires you to be authenticated."
raise TangoError("createFriendship() requires you to be authenticated.")
def destroyFriendship(self, id = None, user_id = None, screen_name = None):
if self.authenticated is True:
@ -282,44 +254,36 @@ class setup:
try:
return simplejson.load(self.opener.open(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "destroyFriendship() failed with a " + str(e.code) + " error code."
raise TangoError("destroyFriendship() failed with a %s error code." % `e.code`)
else:
print "destroyFriendship() requires you to be authenticated."
raise TangoError("destroyFriendship() requires you to be authenticated.")
def checkIfFriendshipExists(self, user_a, user_b):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/friendships/exists.json", urllib.urlencode({"user_a": user_a, "user_b": user_b})))
except HTTPError, e:
if self.debug is True:
print e.headers
print "checkIfFriendshipExists() failed with a " + str(e.code) + " error code."
raise TangoError("checkIfFriendshipExists() failed with a %s error code." % `e.code`)
else:
print "checkIfFriendshipExists(), oddly, requires that you be authenticated."
raise TangoError("checkIfFriendshipExists(), oddly, requires that you be authenticated.")
def updateDeliveryDevice(self, device_name = "none"):
if self.authenticated is True:
try:
return self.opener.open("http://twitter.com/account/update_delivery_device.json?", urllib.urlencode({"device": device_name}))
except HTTPError, e:
if self.debug is True:
print e.headers
print "updateDeliveryDevice() failed with a " + str(e.code) + " error code."
raise TangoError("updateDeliveryDevice() failed with a %s error code." % `e.code`)
else:
print "updateDeliveryDevice() requires you to be authenticated."
raise TangoError("updateDeliveryDevice() requires you to be authenticated.")
def updateProfileColors(self, **kwargs):
if self.authenticated is True:
try:
return self.opener.open(self.constructApiURL("http://twitter.com/account/update_profile_colors.json?", kwargs))
except HTTPError, e:
if self.debug is True:
print e.headers
print "updateProfileColors() failed with a " + str(e.code) + " error code."
raise TangoError("updateProfileColors() failed with a %s error code." % `e.code`)
else:
print "updateProfileColors() requires you to be authenticated."
raise TangoError("updateProfileColors() requires you to be authenticated.")
def updateProfile(self, name = None, email = None, url = None, location = None, description = None):
if self.authenticated is True:
@ -330,7 +294,7 @@ class setup:
updateProfileQueryString += "name=" + name
useAmpersands = True
else:
print "Twitter has a character limit of 20 for all usernames. Try again."
raise TangoError("Twitter has a character limit of 20 for all usernames. Try again.")
if email is not None and "@" in email:
if len(list(email)) < 40:
if useAmpersands is True:
@ -339,7 +303,7 @@ class setup:
updateProfileQueryString += "email=" + email
useAmpersands = True
else:
print "Twitter has a character limit of 40 for all email addresses, and the email address must be valid. Try again."
raise TangoError("Twitter has a character limit of 40 for all email addresses, and the email address must be valid. Try again.")
if url is not None:
if len(list(url)) < 100:
if useAmpersands is True:
@ -348,7 +312,7 @@ class setup:
updateProfileQueryString += urllib.urlencode({"url": url})
useAmpersands = True
else:
print "Twitter has a character limit of 100 for all urls. Try again."
raise TangoError("Twitter has a character limit of 100 for all urls. Try again.")
if location is not None:
if len(list(location)) < 30:
if useAmpersands is True:
@ -357,7 +321,7 @@ class setup:
updateProfileQueryString += urllib.urlencode({"location": location})
useAmpersands = True
else:
print "Twitter has a character limit of 30 for all locations. Try again."
raise TangoError("Twitter has a character limit of 30 for all locations. Try again.")
if description is not None:
if len(list(description)) < 160:
if useAmpersands is True:
@ -365,50 +329,42 @@ class setup:
else:
updateProfileQueryString += urllib.urlencode({"description": description})
else:
print "Twitter has a character limit of 160 for all descriptions. Try again."
raise TangoError("Twitter has a character limit of 160 for all descriptions. Try again.")
if updateProfileQueryString != "":
try:
return self.opener.open("http://twitter.com/account/update_profile.json?", updateProfileQueryString)
except HTTPError, e:
if self.debug is True:
print e.headers
print "updateProfile() failed with a " + e.code + " error code."
raise TangoError("updateProfile() failed with a %s error code." % `e.code`)
else:
print "updateProfile() requires you to be authenticated."
raise TangoError("updateProfile() requires you to be authenticated.")
def getFavorites(self, page = "1"):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/favorites.json?page=" + page))
except HTTPError, e:
if self.debug:
print e.headers
print "getFavorites() failed with a " + str(e.code) + " error code."
raise TangoError("getFavorites() failed with a %s error code." % `e.code`)
else:
print "getFavorites() requires you to be authenticated."
raise TangoError("getFavorites() requires you to be authenticated.")
def createFavorite(self, id):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/favorites/create/" + id + ".json", ""))
except HTTPError, e:
if self.debug:
print e.headers
print "createFavorite() failed with a " + str(e.code) + " error code."
raise TangoError("createFavorite() failed with a %s error code." % `e.code`)
else:
print "createFavorite() requires you to be authenticated."
raise TangoError("createFavorite() requires you to be authenticated.")
def destroyFavorite(self, id):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/favorites/destroy/" + id + ".json", ""))
except HTTPError, e:
if self.debug:
print e.headers
print "destroyFavorite() failed with a " + str(e.code) + " error code."
raise TangoError("destroyFavorite() failed with a %s error code." % `e.code`)
else:
print "destroyFavorite() requires you to be authenticated."
raise TangoError("destroyFavorite() requires you to be authenticated.")
def notificationFollow(self, id = None, user_id = None, screen_name = None):
if self.authenticated is True:
@ -422,11 +378,9 @@ class setup:
try:
return simplejson.load(self.opener.open(apiURL, ""))
except HTTPError, e:
if self.debug is True:
print e.headers
print "notificationFollow() failed with a " + str(e.code) + " error code."
raise TangoError("notificationFollow() failed with a %s error code." % `e.code`)
else:
print "notificationFollow() requires you to be authenticated."
raise TangoError("notificationFollow() requires you to be authenticated.")
def notificationLeave(self, id = None, user_id = None, screen_name = None):
if self.authenticated is True:
@ -440,11 +394,9 @@ class setup:
try:
return simplejson.load(self.opener.open(apiURL, ""))
except HTTPError, e:
if self.debug is True:
print e.headers
print "notificationLeave() failed with a " + str(e.code) + " error code."
raise TangoError("notificationLeave() failed with a %s error code." % `e.code`)
else:
print "notificationLeave() requires you to be authenticated."
raise TangoError("notificationLeave() requires you to be authenticated.")
def getFriendsIDs(self, id = None, user_id = None, screen_name = None, page = "1"):
apiURL = ""
@ -457,9 +409,7 @@ class setup:
try:
return simplejson.load(urllib2.urlopen(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getFriendsIDs() failed with a " + str(e.code) + " error code."
raise TangoError("getFriendsIDs() failed with a %s error code." % `e.code`)
def getFollowersIDs(self, id = None, user_id = None, screen_name = None, page = "1"):
apiURL = ""
@ -472,31 +422,25 @@ class setup:
try:
return simplejson.load(urllib2.urlopen(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getFollowersIDs() failed with a " + str(e.code) + " error code."
raise TangoError("getFollowersIDs() failed with a %s error code." % `e.code`)
def createBlock(self, id):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/blocks/create/" + id + ".json", ""))
except HTTPError, e:
if self.debug is True:
print e.headers
print "createBlock() failed with a " + str(e.code) + " error code."
raise TangoError("createBlock() failed with a %s error code." % `e.code`)
else:
print "createBlock() requires you to be authenticated."
raise TangoError("createBlock() requires you to be authenticated.")
def destroyBlock(self, id):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/blocks/destroy/" + id + ".json", ""))
except HTTPError, e:
if self.debug is True:
print e.headers
print "destroyBlock() failed with a " + str(e.code) + " error code."
raise TangoError("destroyBlock() failed with a %s error code." % `e.code`)
else:
print "destroyBlock() requires you to be authenticated."
raise TangoError("destroyBlock() requires you to be authenticated.")
def checkIfBlockExists(self, id = None, user_id = None, screen_name = None):
apiURL = ""
@ -509,29 +453,23 @@ class setup:
try:
return simplejson.load(urllib2.urlopen(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "checkIfBlockExists() failed with a " + str(e.code) + " error code."
raise TangoError("checkIfBlockExists() failed with a %s error code." % `e.code`)
def getBlocking(self, page = "1"):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/blocks/blocking.json?page=" + page))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getBlocking() failed with a " + str(e.code) + " error code."
raise TangoError("getBlocking() failed with a %s error code." % `e.code`)
else:
print "getBlocking() requires you to be authenticated"
raise TangoError("getBlocking() requires you to be authenticated")
def getBlockedIDs(self):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/blocks/blocking/ids.json"))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getBlockedIDs() failed with a " + str(e.code) + " error code."
raise TangoError("getBlockedIDs() failed with a %s error code." % `e.code`)
else:
raise TangoError("getBlockedIDs() requires you to be authenticated.")
@ -540,8 +478,6 @@ class setup:
try:
return simplejson.load(urllib2.urlopen(searchURL))
except HTTPError, e:
if self.debug is True:
print e.headers
raise TangoError("getSearchTimeline() failed with a %s error code." % `e.code`)
def getCurrentTrends(self, excludeHashTags = False):
@ -551,9 +487,7 @@ class setup:
try:
return simplejson.load(urllib.urlopen(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getCurrentTrends() failed with a " + str(e.code) + " error code."
raise TangoError("getCurrentTrends() failed with a %s error code." % `e.code`)
def getDailyTrends(self, date = None, exclude = False):
apiURL = "http://search.twitter.com/trends/daily.json"
@ -569,9 +503,7 @@ class setup:
try:
return simplejson.load(urllib.urlopen(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getDailyTrends() failed with a " + str(e.code) + " error code."
raise TangoError("getDailyTrends() failed with a %s error code." % `e.code`)
def getWeeklyTrends(self, date = None, exclude = False):
apiURL = "http://search.twitter.com/trends/daily.json"
@ -587,53 +519,43 @@ class setup:
try:
return simplejson.load(urllib.urlopen(apiURL))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getWeeklyTrends() failed with a " + str(e.code) + " error code."
raise TangoError("getWeeklyTrends() failed with a %s error code." % `e.code`)
def getSavedSearches(self):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/saved_searches.json"))
except HTTPError, e:
if self.debug is True:
print e.headers
print "getSavedSearches() failed with a " + str(e.code) + " error code."
raise TangoError("getSavedSearches() failed with a %s error code." % `e.code`)
else:
print "getSavedSearches() requires you to be authenticated."
raise TangoError("getSavedSearches() requires you to be authenticated.")
def showSavedSearch(self, id):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/saved_searches/show/" + id + ".json"))
except HTTPError, e:
if self.debug is True:
print e.headers
print "showSavedSearch() failed with a " + str(e.code) + " error code."
raise TangoError("showSavedSearch() failed with a %s error code." % `e.code`)
else:
print "showSavedSearch() requires you to be authenticated."
raise TangoError("showSavedSearch() requires you to be authenticated.")
def createSavedSearch(self, query):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/saved_searches/create.json?query=" + query, ""))
except HTTPError, e:
if self.debug is True:
print e.headers
print "createSavedSearch() failed with a " + str(e.code) + " error code."
raise TangoError("createSavedSearch() failed with a %s error code." % `e.code`)
else:
print "createSavedSearch() requires you to be authenticated."
raise TangoError("createSavedSearch() requires you to be authenticated.")
def destroySavedSearch(self, id):
if self.authenticated is True:
try:
return simplejson.load(self.opener.open("http://twitter.com/saved_searches/destroy/" + id + ".json", ""))
except HTTPError, e:
if self.debug is True:
print e.headers
print "destroySavedSearch() failed with a " + str(e.code) + " error code."
raise TangoError("destroySavedSearch() failed with a %s error code." % `e.code`)
else:
print "destroySavedSearch() requires you to be authenticated."
raise TangoError("destroySavedSearch() requires you to be authenticated.")
# The following methods are apart from the other Account methods, because they rely on a whole multipart-data posting function set.
def updateProfileBackgroundImage(self, filename, tile="true"):
@ -646,11 +568,9 @@ class setup:
r = urllib2.Request("http://twitter.com/account/update_profile_background_image.json?tile=" + tile, body, headers)
return self.opener.open(r).read()
except HTTPError, e:
if self.debug is True:
print e.headers
print "updateProfileBackgroundImage() failed with a " + str(e.code) + " error code."
raise TangoError("updateProfileBackgroundImage() failed with a %s error code." % `e.code`)
else:
print "You realize you need to be authenticated to change a background image, right?"
raise TangoError("You realize you need to be authenticated to change a background image, right?")
def updateProfileImage(self, filename):
if self.authenticated is True:
@ -662,11 +582,9 @@ class setup:
r = urllib2.Request("http://twitter.com/account/update_profile_image.json", body, headers)
return self.opener.open(r).read()
except HTTPError, e:
if self.debug is True:
print e.headers
print "updateProfileImage() failed with a " + str(e.code) + " error code."
raise TangoError("updateProfileImage() failed with a %s error code." % `e.code`)
else:
print "You realize you need to be authenticated to change a profile image, right?"
raise TangoError("You realize you need to be authenticated to change a profile image, right?")
def encode_multipart_formdata(self, fields, files):
BOUNDARY = mimetools.choose_boundary()