The latest version of the Data Lab client package contains a "mydb_rename(<old>,<new>)" method in the queryClient to rename tables. For example,
>>> from dl import queryClient as qc
>>> print(qc.list())
test
>>> qc.mydb_rename('test','foo')
'OK'
>>> print(qc.list())
foo
You can install the package using 'pip' with:
pip install --upgrade noaodatalab
See also http://github.com/noaodatalab/datalab