python_resources

Before you use python, understand how to install packages using Virualenvs or Conda. As well as the use of Pip:

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VirtualEnvs, Pip, and (mini)Conda

VirtualEnv's

• https://www.i2tutorials.com/python-tutorial/python-virtualenv/

Pip

• What is PIP: https://realpython.com/what-is-pip/
• Installing packages wit PIP: https://snarky.ca/why-you-should-use-python-m-pip/
• Cheatsheet: https://angelesbroullon.gitlab.io/code-notepad/2020/10/05/python-pip/
• pip install requirements -r: https://note.nkmk.me/en/python-pip-install-requirements/
• pip -e (editable mode): https://stackoverflow.com/questions/35064426/when-would-the-e-editable-option-be-useful-with-pip-install

Conda

• https://conda.io/projects/conda/en/latest/user-guide/index.html

Warnings:

• I recommend working directly with virtualenv + pip
• Do not mix conda and pip as indicated here.
• Use pip only inside created virtualenv env. Check which python and pip versions you are using with the command:

which python
which pip

from the command line. Avoid the use of the system's python/pip (although this is inevitable when using ROS).

More on using python ROS and virtualenv's later.

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Python, Numpy, SciPy, Matplotlib

The jupyter notebook below will give you a gentle introduction into core concepts in python, numpy, scipy, and matplotlib.

• https://colab.research.google.com/github/cs231n/cs231n.github.io/blob/master/python-colab.ipynb

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import statements

import statements are very important and you will use them throughout python. It is good to learn to use them well early.

• https://chrisyeh96.github.io/2017/08/08/definitive-guide-python-imports.html