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Python and Anaconda Snippets

Conda Package Management

# Management Environments
## Create a new environment using requirements.txt file with packages
## where "data-science" is the name of the environment
## --yes : agree to confirmations
### For other packages like pyperclip
conda config --append channels conda-forge
conda create --name "data-science" --file requirements.txt --yes
## Create the environment from the environment.yml file
conda env create -f environment.yml
## Export the environment to a file for sharing / creation later
conda env export > environment.yml
## List all environments
conda env list
## Delete an environment
conda env remove -n "ext" --all

# Install a package
conda install PyYAML

## Install a new package in an environment
conda install -n "data-science" <package-names> --yes

## Activate the environment
conda activate "data-science"
## Deactivate the environment
conda deactivate "data-science"

## Delete an environment and its packages
conda remove -n ENVNAME --all

# Channel: Add conda-forge
# Add the 'conda-forge' channel as a backup to 'defaults'
conda config --append channels conda-forge
# Add other channels
conda config --add channels conda-forge
conda config --add channels microsoft

# Manage packages
## Update and clean all packages in current environment
conda update --all --yes; conda clean --all --yes

## Update all packages in the current environment
conda update --all --yes
## List packages in the current environment
conda list
## Clean up unused packages
conda clean --all --yes

# Upgrade conda itself
conda update -n base conda -c anaconda --yes

# Upgrade Python
## See available Python versions with
conda search --full-name python
## Install a specific version, recommended approach is through a new environment and not the current environment
conda create -n py3d9 python=3.9 anaconda
conda create -n py311 python=3.11
## Update to the latest python in the current branch (e.g. 3.x)
conda update python

## Install a specific version.
## It is not recommended, due to resolver has to work very hard to determine exactly which packages to upgrade
## but command is below
conda install python=3.9

Makefile and Conda activate

PYTHON := python3
CONDA_ACTIVATE = . "/home/justin/miniconda3/etc/profile.d/conda.sh" && conda activate ext
PYTHON_WINDOWS := python
CONDA_ACTIVATE_WINDOWS = /c/Users/justi/scoop/apps/miniconda3/current/condabin/activate.bat ext

Set Conda Proxy

Create .condarc file and put in $HOME
Note there is no http inside the variable values

proxy_servers:
    http: 1.1.1.1:3128
    https: 1.1.1.1:3128

See Also