[FIXED] Missing _bz when using fetch_openml // Missing _lzma when importing torchvision

Issue

I am using Python 3.9.13. I installed scikit-learn from the terminal: pip install scikit-learn

Then I tried to download the mnist dataset using fetch_openml:

from sklearn.datasets import fetch_openml
raw_data = fetch_openml('mnist_784')

That gave me a long error message ending with:

fetch_openml with as_frame=True requires pandas.

However, I had pandas installed. So I looked more deeply inside the error message and I found that the exception causing that error was this:

ModuleNotFoundError: No module named '_bz2'

Solution

I looked around and found a solution in this thread.

I only had to add another step to that solution. After installing libbz2-dev I only had _bz2.cpython-38-x86_64-linux-gnu.so on my computer which is used for python 3.8.x so it did not work with my version of python. I changed the file's name to _bz2.cpython-39-x86_64-linux-gnu.so and it worked after that.

sudo apt-get install libbz2-dev
sudo cp /usr/lib/python3.8/lib-dynload/_bz2.cpython-38-x86_64-linux-gnu.so /usr/local/lib/python3.9/
sudo mv /usr/local/lib/python3.9/_bz2.cpython-38-x86_64-linux-gnu.so /usr/local/lib/python3.9/_bz2.cpython-39-x86_64-linux-gnu.so

Answered By - Saphira