'Enum' object has no attribute 'OPTIM'

[Vfisa]

m.fit(df)

ERROR:main:'Enum' object has no attribute 'OPTIM'

pandas: 0.19.2
numpy: 1.12.0
fbprophet: 0.1.post1
pystan: 2.14.0.0
OSX Python 2.7

Thanks!

[seanjtaylor]

Thanks for the bug report @Vfisa. Does it depend on the dataframe you pass in, or is for any dataframe? Would you mind sharing your input data?

[Vfisa]

Hi. thanks for a quick response!
I believe the issue is on my machine with P2.7, since it runs correctly on the corporate docker image (P3.6).

Sales data:
https://bitbucket.org/VFisa/kbc_forecasting_prophet/src/d4027c5ee48bf60bff4a7d5767f656e1034299c1/sales.csv?at=master&fileviewer=file-view-default

[bletham]

I'm unable to replicate the issue with those data, can you verify that pystan is working correctly?

>>> import pystan
>>> model_code = 'parameters {real y;} model {y ~ normal(0,1);}'
>>> model = pystan.StanModel(model_code=model_code)
>>> y = model.sampling(n_jobs=1).extract()['y']
>>> y.mean()  # with luck the result will be near 0

[Vfisa]

[Running] python "test_pystan.py"
INFO:pystan:COMPILING THE C++ CODE FOR MODEL anon_model_5944b02c79788fa0db5b3a93728ca2bf NOW.
Traceback (most recent call last):
File "test_pystan.py", line 4, in
y = model.sampling(n_jobs=1).extract()['y']
File "/Library/Python/2.7/site-packages/pystan/model.py", line 703, in sampling
control=control, **kwargs)
File "/Library/Python/2.7/site-packages/pystan/misc.py", line 484, in _config_argss
argss[i] = _get_valid_stan_args(argss[i])
File "/Library/Python/2.7/site-packages/pystan/misc.py", line 503, in _get_valid_stan_args
args['method'] = stan_args_method_t.SAMPLING
AttributeError: 'Enum' object has no attribute 'SAMPLING'

[seanjtaylor]

This almost has to be a PyStan version problem.

https://github.com/stan-dev/pystan/blob/develop/pystan/constants.py#L19 is the current code in PyStan and it hasn't changed in over a year.

You should try to reinstall PyStan, and if it still is broken, file an issue with PyStan. Thanks!