[BUG] MDPDataset: unexpected keyword argument 'create_mask'

[pstansell]

Hello @takuseno,

Running the following code with the most recent version of d3rlpy gives the error below:

from d3rlpy.datasets import get_pendulum
dataset_expert, env = get_pendulum()

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/user/d3rlpy/d3rlpy/datasets.py", line 93, in get_pendulum
    dataset = MDPDataset(
  File "d3rlpy/dataset.pyx", line 141, in d3rlpy.dataset.MDPDataset.__init__
TypeError: __init__() got an unexpected keyword argument 'create_mask'

The problem seems to have been introduced in the "Refactor mask creation" commit here

• 93b38dd (code fails)

as the code runs in the commit before that, ie,

• d9a9d6e (code runs)

[takuseno]

@pstansell Hello, the Cython code is changed. Please run this command.

$ python setup.py build_ext --inplace

[pstansell]

@takuseno, thank you for your quick response. I didn't realise I had to rebuild parts of the code. After running the command you suggested the code works fine.