not comfortable with rethinkdb-python 2.4.1

[zjqzero]

In [1]: import remodel                                                                                                                                                                                            
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-1-2f932a5f00d5> in <module>
----> 1 import remodel

~/.pyenv/versions/3.6.8/lib/python3.6/site-packages/remodel/__init__.py in <module>
----> 1 import remodel.monkey

~/.pyenv/versions/3.6.8/lib/python3.6/site-packages/remodel/monkey.py in <module>
      4 
      5 
----> 6 run = r.ast.RqlQuery.run
      7 
      8 def remodel_run(self, c=None, **global_optargs):

AttributeError: module 'rethinkdb' has no attribute 'ast'