Managing Conda and Anaconda

Verify conda is installed, check version

Get the version

1	`conda --version`

1	`conda info`

Update conda package and environment manager

1	`conda update conda`

Update the anaconda meta package

1	`conda update anaconda`

Managing Environments

Get a list of all my Anaconda environments

conda info --envs

conda env list

# The above two commands are equivalent

Create an Anaconda environment

1	`conda create -n env_name`

Create an Anaconda environment with a specific version of Python

conda create -n env_name python=3.6

Create an Anaconda environment with a specific package

conda create -n env_name scipy

# with a specific version of a package 
conda create -n env_name scipy=0.15.0

Create an Anaconda environment from an environment.yml file

conda env create -f environment.yml

# The first line of the yml file sets 
# the new environment's name.

In order to create an Anaconda environment file manually, see https://conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#create-env-file-manually

Activate an Anaconda environment to use it

1	`conda activate env_name`

Deactivate the Anaconda environment

1	`conda deactivate`

Delete an Anaconda environment

1	`conda env remove --name env_name`

Installing python packages

1	`conda install [PackageName]`

If you encounter the error PackagesNotFoundError: The following packages are not available from current channels, do the following:

1	`conda config --append channels conda-forge`

conda-forge is a GitHub organization containing repositories of conda recipes. Thanks to some awesome continuous integration providers, each repository automatically builds its own recipe in a clean and repeatable way on Windows, Linux and OSX.

If a package cannot be easily installed with pip because of issues with system libraries (e.g. version of gcc), a possible solution is to install the package with conda, which is less dependent on system libraries.

Troubleshooter

“Collecting package metadata” cannot proceed and never end #9221 https://github.com/conda/conda/issues/9221
failed to create anaconda environment ResolvePackageNotFound https://stackoverflow.com/questions/48439159/failed-to-create-anaconda-environment-resolvepackagenotfound

References

https://kapeli.com/cheat_sheets/Conda.docset/Contents/Resources/Documents/index
https://conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#activating-an-environment