Ubuntu Question posted in
The official Ubuntu documentation can be found here.

Cannot Import a python Module from a package that is installed in Ubuntu

Before I talk about the problem, I cannot use pip directly in ubuntu, I have to set a python virtual environment first. whenever I do that outside the environment I get this message :

error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.
    
    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.
    
    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.
    
    See /usr/share/doc/python3.12/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.

I installed a package called mamba-ssm using pip. and I am using command line to run a python script that imports a module from mamba ssm like this :

`from mamba_ssm.ops.triton.ssd_combined import mamba_chunk_scan_combined`

but when I run the script I get this error message :
ModuleNotFoundError: No module named mamba_ssm.ops.triton.ssd_combined

But when I run python in the terminal and import the module it gets imported.

I tried :
export PYTHONPATH=home/fadia/splice/lib/python3.12/site-packages/mamba_ssm:$PYTHONPATH
then running my code.

I tried executing the code using python of the venv I created :
/home/venv/bin/python

added from mamba_ssm.ops.triton.ssd_combined import mamba_chunk_scan_combined to __init__py

nothing works.

Tags:

2

Answers


  1. 0

    Have you tried cloning mamba directly in your virtual environment?

    Also, restarting the computer is the kind of step we forget too often. This should only be done as the last resort, or NEVER.

    In the never case, you also should try to restart your kernel, ide, et cetera.

    Also, your error message hinted me at this documentation, which I think you should read for your general understanding of this particular error message.

    https://pythonspeed.com/articles/externally-managed-environment-pep-668/

    Login or Signup to reply.
  2. 0

    Something is probably going on with your venv or your installation of mamba. I was able to get the your sample working by running these commands in the terminal:

    sudo apt install python3-venv
python3 -m venv mambaenv
source mambaenv/bin/activate
python3 -m pip install torch
python3 -m pip install mamba-ssm

    You can verify whether or not that worked using this Python script:

    from mamba_ssm.ops.triton.ssd_combined import mamba_chunk_scan_combined
print(mamba_chunk_scan_combined) # <function mamba_chunk_scan_combined at [address]>
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search