PyMySQL3 and SQLAlchemy

I have a simple script I'd like to run

connection_string = 'mysql+pymysql://example@example.com'
engine = sa.create_engine(connection_string)
connection = engine.connect()

query = """
    select distinct n.listname, n.notes
    from notes n 
    join run r on n.start = r.start
    where r.branch = 'B_HEAD' 
    and r.start > '2015-08-01' 
    and n.notes like '%ug%';"""
result = connection.execute(query)
for row in result:
    print("listname: {} | notes: {}".format(row['listname'], row["notes"]))

The problem is that PyMySQL isn't Python3 compatible. There is, however, a PyMySQL3.

but if I try to use that module as my connector I get

sqlalchemy.exc.NoSuchModuleError: Can't load plugin: sqlalchemy.dialects:mysql.pymysql3

Is there a simple way to make SQLAlchemy and PyMySQL3 play nice? Baring that is there a way to create custom connectors for SQLAlchemy?

via Chebli Mohamed