Den 2026-09-24 skrev Martin Sch””n <
martin.schoon@gmail.com>:
<snip>
My problem is the unique 'mark up' I need to weed out...
Also, some questionable tips are hiding among the good ones. I will keep
them but add comments. I think it illustrates nicely how careful you
need be when reading LLM produce.
OK, let's see how I managed. Org-mode kind of markup used:
* Heading 1
** Heading 2
~code~
+ list bullet
*bold*
/emphasis/
# Python style inline comment by me.
###################################################################
Mistral Small 4 on bets practice for managing virtual environments
using conda.
Managing virtual environments with Conda (Anaconda/Miniconda) is
essential for isolating project dependencies and avoiding
conflicts. Here are the best practices. By following these
practices, you ensure reproducible, conflict-free environments for
your projects.
* Create isolated environments
Always create a dedicated environment for each project to
avoid dependency conflicts.
Create a new environment with a specific Python version:
~conda create --name my_project python=3.9~
Activate the environment:
~conda activate my_project~
*Best Practice:*
+ Use descriptive names (e.g., `my_project_dev', `data_science_env').
+ Specify Python versions explicitly (`python=3.9' instead of just
`python').
* Export and recreate environments
To share or replicate an environment, export its dependencies to
a YAML file.
Export the environment to a YAML file:
~conda env export --name my_project > environment.yml~
Recreate the environment from the YAML file:
~conda env create --file environment.yml~
*Best Practice:*
+ Commit environment.yml to version control (e.g., Git) for
reproducibility.
+ Use `conda env export --from-history' to export only explicitly
installed packages (avoids unnecessary dependencies).
* Update environments safely
Avoid breaking dependencies by updating packages carefully.
Update all packages in the environment:
~conda update --all~ # This is /not/ recommended by NSC!
Update a specific package:
~conda update numpy~
*Best Practice:*
+ Test updates in a staging environment before applying them to
production.
+ Use `conda list' to check installed versions before updating.
* Remove unused environments
Clean up old environments to save disk space.
List all environments:
~conda env list~
Remove an environment:
~conda env remove --name old_env~
*Best Practice:*
+ Regularly prune unused environments (`conda clean --all' removes
cached packages).
* Use conda-forge for additional packages
Prefer conda-forge for community-maintained packages.
Add conda-forge as a channel:
~conda config --add channels conda-forge~
Install a package from conda-forge:
~conda install some_package~
*Best Practice:*
+ Prioritize conda-forge over the default Anaconda channel for
broader package availability.
* Avoid mixing conda and pip
If you must use pip, install it first in the Conda environment.
~conda install pip~
~pip install some_pip_package~
*Best Practice:*
+ Prefer Conda packages when possible to avoid conflicts.
+ If using pip, document it in environment.yml under `pip:'.
# According to NSC you should /never/ install packages using conda
# /after/ you have used pip. Do /all/ conda (mamba) installs before
# using pip!
* Use `conda clean' regularly
Remove unused packages and caches to free up space.
~conda clean --all~
*Best Practice:*
+ Run this periodically to keep your Conda installation lean.
* Use environment variables for paths
Set environment variables to avoid hardcoding paths.
Set a variable in the current shell:
~export MY_DATA_DIR=/path/to/data~
Or set it in the Conda environment:
~conda env config vars set MY_DATA_DIR=/path/to/data~
~conda activate my_project~
**Best Practice:**
+ Use `.env` files for project-specific variables (load them with
`python-dotenv`).
* Use mamba for faster dependency resolution
Mamba is a drop-in replacement for Conda that resolves dependencies
much faster.
Install mamba:
~conda install mamba -n base -c conda-forge~
Use mamba instead of conda:
~mamba install numpy pandas~
*Best Practice:*
+ Use mamba for large environments to speed up installation.
* Document dependencies clearly
Include a README.md in your project with:
- Environment setup instructions.
- Key dependencies.
- How to activate the environment.
* Example Workflow
** Create environment
~conda create --name my_project python=3.9~
~conda activate my_project~
** Install packages
~conda install numpy pandas scikit-learn~
~pip install some_pip_package~
** Export environment
~conda env export --from-history > environment.yml~
** Share environment
Share environment.yml and README.md with collaborators.
####################################################################
I hope this is readable.
Note that some advice above is /not/ good practice according to the instructions supplied by NSC and NCS provides plausible motivation
for their advice.
https://nsc.gitlab-pages.liu.se/berzelius-training/managing-conda-environments-best-practices/2.%20best-practices/
I have tested none of this so far. The weather has been too nice :-)
/Martin
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* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)