Refactoring code for 1.4 in Python. Here are the fixes I've had to make so far (so everyone can reference):

--Adjust imports

Change: "from rethinkdb import r" To: "import rethinkdb as r"

--No more connection.run()

Change all your connection.run() to .run(connection)

For instance:

connection.run(r.db('test_db').table_create('test_table'))

becomes

r.db('test_db').table_create('test_table').run(connection)

--No more global connections

This one sucks IMHO. Took more than I'd like to refactor (still in progress). You have to explicitly pass a connection to every run() command. So this:

r.table('test_table').run()

becomes

r.table('test_table').run(C)

where C is a declared connection.

More notes as I find them....