Where are Python Packages Installed During a Jupyter Session?

You can use pip list -v and conda list to inspect what is in your environment.

Example using the default Python kernel:

# Cell
import sys
print(sys.version)

3.12.3 | packaged by Anaconda, Inc. | (main, May 6 2024, 19:46:43) [GCC 11.2.0]

Package                   Version     Location                                                   Installer
------------------------- ----------- ---------------------------------------------------------- ---------
anyio                     4.2.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
argon2-cffi               21.3.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
argon2-cffi-bindings      21.2.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
asttokens                 2.0.5       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
async-lru                 2.0.4       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
attrs                     23.1.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
Babel                     2.11.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
beautifulsoup4            4.12.2      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
bleach                    4.1.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
Brotli                    1.0.9       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
certifi                   2024.2.2    /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
cffi                      1.16.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
charset-normalizer        2.0.4       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
comm                      0.2.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
debugpy                   1.6.7       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
decorator                 5.1.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
defusedxml                0.7.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
executing                 0.8.3       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
fastjsonschema            2.16.2      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
idna                      3.7         /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
ipykernel                 6.28.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
ipython                   8.20.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
ipywidgets                8.1.2       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jedi                      0.18.1      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
Jinja2                    3.1.3       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
json5                     0.9.6       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jsonschema                4.19.2      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jsonschema-specifications 2023.7.1    /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyter                   1.0.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyter_client            8.6.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyter-console           6.6.3       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyter_core              5.5.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyter-events            0.8.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyter-lsp               2.2.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyter_server            2.10.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyter_server_terminals  0.4.4       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyterlab                4.0.11      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyterlab-pygments       0.1.2       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyterlab_server         2.25.1      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
jupyterlab-widgets        3.0.10      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
MarkupSafe                2.1.3       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
matplotlib-inline         0.1.6       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
mistune                   2.0.4       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
nbclient                  0.8.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
nbconvert                 7.10.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
nbformat                  5.9.2       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
nest-asyncio              1.6.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
notebook                  7.0.8       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
notebook_shim             0.2.3       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
numpy                     2.0.0       /home/<username>/.local/lib/python3.12/site-packages         pip
overrides                 7.4.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
packaging                 23.2        /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
pandocfilters             1.5.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
parso                     0.8.3       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
pexpect                   4.8.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
pip                       24.0        /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages
platformdirs              3.10.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
ply                       3.11        /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
prometheus-client         0.14.1      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
prompt-toolkit            3.0.43      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
psutil                    5.9.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
ptyprocess                0.7.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
pure-eval                 0.2.2       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
pycparser                 2.21        /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
Pygments                  2.15.1      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
PyQt5                     5.15.10     /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
PyQt5-sip                 12.13.0     /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
PySocks                   1.7.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
python-dateutil           2.9.0.post0 /home/<username>/.local/lib/python3.12/site-packages         pip
python-json-logger        2.0.7       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
pytz                      2024.1      /home/<username>/.local/lib/python3.12/site-packages         pip
PyYAML                    6.0.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
pyzmq                     25.1.2      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
qtconsole                 5.5.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
QtPy                      2.4.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
referencing               0.30.2      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
requests                  2.31.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
rfc3339-validator         0.1.4       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
rfc3986-validator         0.1.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
rpds-py                   0.10.6      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
Send2Trash                1.8.2       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
setuptools                69.5.1      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages
sip                       6.7.12      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
six                       1.16.0      /home/<username>/.local/lib/python3.12/site-packages         pip
sniffio                   1.3.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
soupsieve                 2.5         /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
stack-data                0.2.0       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
terminado                 0.17.1      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
tinycss2                  1.2.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
tornado                   6.3.3       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
traitlets                 5.7.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
typing_extensions         4.11.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
tzdata                    2024.1      /home/<username>/.local/lib/python3.12/site-packages         pip
urllib3                   2.2.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
wcwidth                   0.2.5       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
webencodings              0.5.1       /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
websocket-client          0.58.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
wheel                     0.43.0      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages
widgetsnbextension        4.0.10      /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages conda
Note: you may need to restart the kernel to use updated packages.

Notice there are two paths:

The library path of the conda environment that this default kernel is running from: /apps/s/jupyterlab/miniconda3/lib/python3.12/site-packages
Your local home library path related to the version of Python within this kernel: /home/<username>/.local/lib/python3.12/site-packages