>>> from rethinkdb import RethinkDB
>>> r = RethinkDB()
>>> r.now()
Traceback (most recent call last):
  File "/Users/nlevitt/workspace/doublethink/doublethink-ve37/lib/python3.7/site-packages/rethinkdb/errors.py", line 246, in __iter__
    for sub in next(itr):
StopIteration

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/nlevitt/workspace/doublethink/doublethink-ve37/lib/python3.7/site-packages/rethinkdb/ast.py", line 147, in __repr__
    return "<RqlQuery instance: %s >" % str(self)
  File "/Users/nlevitt/workspace/doublethink/doublethink-ve37/lib/python3.7/site-packages/rethinkdb/ast.py", line 144, in __str__
    return printer.print_query()
  File "/Users/nlevitt/workspace/doublethink/doublethink-ve37/lib/python3.7/site-packages/rethinkdb/errors.py", line 202, in print_query
    return ''.join(self.compose_term(self.root))
  File "/Users/nlevitt/workspace/doublethink/doublethink-ve37/lib/python3.7/site-packages/rethinkdb/errors.py", line 251, in __iter__
    for sub in token:
RuntimeError: generator raised StopIteration