Pystan can't call StanModel attribute

General
1

Hi boys, I’m trying run pystan model in linux and print me this:

Traceback (most recent call last):
File “pystan.py”, line 1, in
import pystan
File “/media/luis/LUSCA/Python/pystan.py”, line 31, in
sm = pystan.StanModel(model_code=schools_code, data=schools_dat,
AttributeError: ‘module’ object has no attribute ‘StanModel’

2

Hi, rename your pystan.py file to something else. Now it tries local import (that file) and fails

Also, note that data goes to sampling method.

3

Not, not work, now I’m trying only import pystan and can’t it.

import numpy as np
import pandas as pd
import pystan

Traceback (most recent call last):
File “model.py”, line 3, in
import pystan
ImportError: No module named pystan

I have installed pystan by pip and anaconda

4

Well, pystan was not correctly installed, you have to install it again, check again how you are doing that.

5

Can you do

python -m pip install pystan

Then

python -c "import pystan; print(pystan.__version__)
6

Thanks ahartikainen, rosgori, but I can’t import modules. I believe that’s about PYTHONPATH directory .path. I have try all posibility, installing all packages and re-installing allways get out ImportError

7

How do you have your python set-up? Anaconda?

What does this say?

import os
print(os.__file__)

And when you do pip install, is everything going fine?

8

Ok, printing os.file return: C:\Users\LuisEmerson\AppData\Local\Programs\Python\Python38-32\lib\os.py
and when I install with pip o conda work fine
install pip and conda

9

Can you start you python from anaconda prompt? Your normal python != anaconda python.

For windows please follow https://pystan.readthedocs.io/en/latest/windows.html

10

Solved, ok. Thanks ahartikainen, rosgori again. It was about environment directory PATH. Also, I uninstalled numpy and scipy then installed and upgraded.