add pythoň intro

docs/10-prerequisities/51-python.md

@@ -5,3 +5,27 @@ description: Python
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 # Python
+
+Python is generally recommended as the programming language for quick prototyping, and developing software that does not need to be executed quickly/frequently. This may include mission progress tracking, waypoint planning, analyzing flight recordings etc. Components which rely on fast execution (state estimators, flight controllers, onboard data processors...) should be written in [C++](https://ctu-mrs.github.io/docs/software/cpp).
+
+Coding with Python has its perks, mainly:
+* no need to re-compile after every change
+* simpler syntax than C++
+* plenty of built-in libraries
+
+but it also comes with its drawbacks:
+* no compilation means errors only occur in runtime - not ideal when runtime means flying robots!
+* generally slower runtime performance than C++
+* versions change often, libraries change often, backwards compatibility not guaranteed
+
+### Python2 vs Python3
+There are currently 2 main versions of Python being used: Python2 and Python3. Python2 is no longer being developed, but remains in use in some areas for various reasons. We **strongly recommend using Python3**, which is actively maintained and developed.
+
+### General resources
+
+* The official online documentation for Python offers plenty of tutorials for beginners as well as in-depth look into the language: [https://docs.python.org/3/tutorial/introduction.html](https://docs.python.org/3/tutorial/introduction.html)
+* [CZECH ONLY]: Dr. Petr Štěpán - [Krátká výuková videa](https://cw.fel.cvut.cz/wiki/courses/b3b33alp/cviceni/kratka_videa/start)
+
+### First steps with ROS in Python
+
+A simple guide on how to write your first ROS node in Python is available here: [https://wiki.ros.org/ROS/Tutorials/WritingPublisherSubscriber](https://wiki.ros.org/ROS/Tutorials/WritingPublisherSubscriber%28python%29).