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Dask Example Notebooks

This repository includes easy-to-run example notebooks for Dask. They are intended to be educational and give users a start on common workflows.

They should be easy to run locally if you download this repository. They are also available on the cloud by clicking on the link below:

Contributing

This repository is a great opportunity to start contributing to Dask. Please note that examples submitted to this repository should follow these guidelines:

1. Run top-to-bottom without intervention from the user

2. Not require external data sources that may disappear over time (external data sources that are highly unlikely to disappear are fine)

3. Not be resource intensive, and should run within 2GB of memory

4. Be clear and contain enough prose to explain the topic at hand

5. Be concise and limited to one or two topics, such that a reader can get through the example within a few minutes of reading

6. Be of general relevance to Dask users, and so not too specific on a particular problem or use case

   As an example "how to do dataframe joins" is a great topic while "how to do dataframe joins in the particular case when one column is a categorical and the other is object dtype" is probably too specific

7. If the example requires a library not included in binder/environment.yml then it would be pip installed` in the first cell of the notebook, with a brief explanation about what functionality the library adds. A brief example follows:

   ### Install Extra Dependencies
   
   We first install the library X for interacting with Y

   !pip install X

Updating the Binder environment

1. Modify binder/environment-base.yml with new or updated dependencies

2. Run a linux/amd64 Docker container with mamba available. For example:

   docker run --platform=linux/amd64 -it --rm --mount type=bind,source=$(pwd)/binder,target=/binder condaforge/mambaforge /bin/bash

   This mounts the ./binder folder in /binder in the Docker container

3. Create the environment

   mamba env create -f environment-base.yml

   This may take quite a while.

4. Export the environment specification:

   mamba env export -n dask-examples --no-builds -f environment.yml