bashtage/arch

ModuleNotFoundError: No module named 'arch' when importing arch_model

alfarocesar opened this issue · 7 comments

alfarocesar commented

Hello,

I am encountering an issue with the arch library in Python. Whenever I try to import the arch_model module, I receive the following error:
ModuleNotFoundError: No module named 'arch'

Here are the details of my setup:
Python version: 3.11.3
Operating system: MAC Ventura 13.4.1

I have already attempted the following troubleshooting steps:
Verified that the arch library is installed using pip list.
Checked the installed versions of arch using pip show arch.
Tried reinstalling arch using pip install --force-reinstall arch.
Confirmed that I am working within the correct virtual environment.
Despite these efforts, I am still unable to resolve the issue. Could you please provide guidance on how to fix this problem? Any assistance would be greatly appreciated.

Thank you,
César

alfarocesar commented

Installed libraries in the virtual environment:

Package Version

arch 6.1.1.dev7+g6bf7e77
numpy 1.25.0
packaging 23.1
pandas 2.0.3
patsy 0.5.3
pip 23.1.2
python-dateutil 2.8.2
pytz 2023.3
scipy 1.11.1
setuptools 67.8.0
six 1.16.0
statsmodels 0.14.0
tzdata 2023.3
var 2023.6.2
wheel 0.38.4

bashtage commented

What command did you use to install arch?

alfarocesar commented

Thank you for your response. I have tried multiple commands, including:

pip install arch
pip install git+https://github.com/bashtage/arch.git
pip install --force-reinstall statsmodels arch
pip install statsmodels arch

Despite these installation attempts, I am still encountering the 'ModuleNotFoundError' when trying to import the 'arch' library.

bashtage commented

Have you tried installing arch==6.0.0 to see if it version specific. I would also use commands like

python -m pip install arch==6.0
python -m IPython

Just to make sure you are using the right python.

alfarocesar commented

Hello,
it didn´t work,
Currently, these are the installed libraries in my virtual environment:
appnope 0.1.3
arch 6.0.0
asttokens 2.2.1
backcall 0.2.0
decorator 5.1.1
executing 1.2.0
ipython 8.14.0
jedi 0.18.2
matplotlib-inline 0.1.6
numpy 1.25.0
packaging 23.1
pandas 2.0.3
parso 0.8.3
patsy 0.5.3
pexpect 4.8.0
pickleshare 0.7.5
pip 23.1.2
prompt-toolkit 3.0.38
ptyprocess 0.7.0
pure-eval 0.2.2
Pygments 2.15.1
python-dateutil 2.8.2
pytz 2023.3
scipy 1.11.1
setuptools 67.8.0
six 1.16.0
stack-data 0.6.2
statsmodels 0.14.0
traitlets 5.9.0
tzdata 2023.3
var 2023.6.2
wcwidth 0.2.6
wheel 0.38.4

bashtage commented

Have you resolved this? I can't reproduce it. I did

conda create -n arch-test python=3.11 ipython -y
conda activate arch-test
python -m pip install arch
python -m IPython

and then ran

from arch import arch_model

which worked as expected.

bashtage commented

Since I can't reproduce in a fresh environment, I'm going to close. Please continue to post if you are having problems.