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Parameters are a place for you to store variables for your pipeline that can be accessed by any node that needs it, and can be easily changed by changing your environment. Parameters are stored in the repository in yaml files. https://youtu.be/Jj5cQ5bqcjg What is Kedro [1] 👆 Unsure what kedro is? Check out this post. parameters files # [2] You can have multiple parameters files and choose which ones to load by setting your environment. By default kedro will give you a base and local parameters file. - conf/base/parameters.yml - conf/local/parameters.yml base # [3] The base environment should contain all of the default values you want to run. # /conf/base/parameters.yml test_size: 0.2 random_state: 3 features: - engines - passenger_capacity - crew - d_check_complete - moon_clearance_complete - iata_approved - company_rating - review_scores_rating NOTE base will always be loaded first. accessing parameters # [4] Parameters can be accessed through context or throug...

https://youtu.be/-gEwU-MrPuA Before we jump in with anything crazy, let’s make some nodes with some vanilla data structures. import node # [1] You will need to import node from kedro.pipeline to start creating nodes. from kedro.pipeline import node func # [2] The func is a callable that will take the inputs and create the outputs. inputs / outputs # [3] Inputs and outputs can be None, a single catalog entry as a string, mutiple catalog entries as a List of strings, or a dictionary of strings where the key is the keyword argument of the func and the value is the catalog entry to use for that keyword. our first node # [4] Sometimes in our pipelines our data is coming from an api where we already have python functions built to pull with. Thats ok, kedro supposrts that with inputs=None. def create_range(): return range(100) make_range = node( func=create_range, inputs=None, outputs='range' ) second node # [5] Now we have some data to work from, lets use that as our inpu...

Running your kedro pipeline from the command line could not be any easier to get started. This is a concept that you may or may not do often depending on your workflow, but its good to have under your belt. I personally do this half the time and run from ipython half the time. In production, I mostly use docker and that is all done with this cli. https://youtu.be/ZmccpLy-OEI What is Kedro [1] 👆 Unsure what kedro is? Check out this post. Kedro run # [2] To run the whole darn project all we need to do is fire up a terminal, activate our environment, and tell kedro to run. kedro run Specific Pipelines # [3] Running a sub pipeline that we have created is as easy as telling kedro which one we want to run. kedro run --pipeline dp Single Nodes # [4] While developing a node or a small list of nodes in a larger pipeline its handy to be able to run them one at a time. Besides the use case of developing a single node I would not reccomend leaning very heavy on running single nodes, le...

Avoid serious version conflict issues, and use a virtual environment [1] anytime you are running python, here are three ways you can setup a kedro virtual environment. https://youtu.be/ZSxc5VVCBhM - conda - venv - pipenv conda # [2] I prefer to use conda as my virtual environment manager of choice as it give me both the interpreter and the packages I install. I don’t have to rely on the system version of python or another tool to maintain python versions at all, I get everything in one tool. conda create -n my-project python=3.8 -y conda activate my-project python -m pip install --upgrade pip pip install -e src conda info --envs - stores environment in a root directory i.e. ~/miniconda3 - conda can use its own way to manage environments environment.yml - the python interpreter is packaged with the environment virtualenv # [3] Virtual env (venv) is another very respectable option that is built right into python, and requires no additional installs or using a different dis...

Kedro comes with an install command to install and manage all of your projects dependencies. https://youtu.be/IWimEs-hHQg cd into your project directory and activate env # [1] You must start by having your kedro project either cloned down from an existing project or created from kedro new. Then activate your environment. Kedro New [2] this post covers kedro new kedro Virtual Environment [3] This post covers creating your virtual environment [4] for kedro install kedro # [5] Make sure you have kedro installed in your current environment, if you dont already have it. pip install kedro==0.17.4 pip-tools # [6] Kedro uses the pip-tools package under the hood to pin dependencies in a very robust way to ensure that the project will continue to work on everyone’s machine day, including production, day in and day out. No matter what happens to the dependencies you have installed. pip-compile # [7] The command that kedro uses from pip-tools is pip-compile. It will look at what yo...

Immediately after kedro new, before you start running kedro install or your first line of code the first thing you should always do after getting a new kedro template created is to git init. https://youtu.be/IGba3ytf_6U git init # [2] Its as simple as these three commands to get started. git init git add . git commit -m init I don’t care if this project is for learning, if it will never have a remote or not, use git. References: [1]: /glossary/git/ [2]: #git-init

https://youtu.be/uqiv5LAiJe0 Kedro new is simply a wrapper around the cookiecutter templating library. The kedro team maintains a ready made template that has everything you need for a kedro project. They also maintain a few kedro starters, which are very similar to the base template. What is Kedro [1] Unsure what kedro is, Check out yesterdays post on What is Kedro. pipx # [2] I reccomend using pipx when running kedro new. pipx is designed for system level cli tools so that you do not need to maintain a virtual environment [3] or worry about version conflicts, pipx manages the environment for you. The kedro team does not reccomend pipx in their docs as they already feel like there is a bit of a tool overload for folks that may be less familiar with pipx kedro new I like using pipx as it gives you better control over using a specific version or always the latest version, unlike when you run what you have on your system depends on when you last installed or upgraded. Kedro Ne...