migrating to a new twitter account

migrate.txt

if you want to change your twitter screen_name, use https://twitter.com/settings/account

if you want to move to a new account but don't want to give up the old one:

old user = @old
new user = @new

it helps to have two independent browser windows open (two different browsers,
or one browser with a normal window and an incognito window).

steps:

* login to each account separately in the browsers
* create a twitter app at https://apps.twitter.com/ using either account
* note down its consumer_key, consumer_secret

from tweepy import OAuthHandler, API, Cursor

oldauth = OAuthHandler(consumer_key, consumer_secret)
print(oldauth.get_authorization_url())

visit that link in its browser, get the verifier, then

oldauth.get_access_token(verifier)
oldapi = API(oldauth)

newauth = OAuthHandler(consumer_key, consumer_secret)
print(newauth.get_authorization_url())

visit that link in its browser, get the verifier, then

newauth.get_access_token(verifier)
newapi = API(newauth)

subscribing to all users:

oldfriends = []
for friend in Cursor(oldapi.friends_ids).items():
  oldfriends.append(friend)

tweepy throws an exception if you try to add a friend who's already your
friend, so

already = set()
for friend in Cursor(newapi.friends_ids).items():
  already.add(friend)

for friend in oldfriends:
  if friend not in already:
    try:
      _ = snowapi.create_friendship(user_id=friend)
    except Exception as exc:
      print(str(exc))
    else:
      print(friend)
      already.add(friend)

copying lists:

oldids = {}
for old in oldapi.lists_all():
  oldids[old.name] = old.id
  _ = newapi.create_list(name=old.name, description=old.description, mode=old.mode)

for new in newapi.lists_all():
  print new.name
  atnames = ['@' + member.screen_name for member in oldapi.list_members(list_id=oldids[new.name], count=5000)]
  print len(atnames)
  # there is a limit to how many i can add at a time, but i don't know
  # what it is.  using 20 for now
  for i in range(0, len(atnames), 20):
    _ = newapi.add_list_members(list_id=new.id, screen_name=atnames[i:i+20])