Gain insights into Pythonic programming techniques. Learn about documentation, data types, safety, performance, and function design to write fast, maintainable, and correct Python code.

python3.8.tar.gz

Python3.8

Python3.8Code

This course is an invaluable resource for anyone who wants to learn the correct Pythonian way of writing highly performant code that is easy to maintain and grow.

The course is divided into six chapters: documentation tips, data types/data structures tips, safety tips, performance tips, function design tips, and general tips. Throughout each chapter, you will get hands-on experience working with real Python code to help ingrain each concept.

By the end, you will know how to make your programs correct, safe, fast, and easy to maintain.

Pythonic Programming Tips for Software Engineers

## Problem statement
Design a class, `Circle`, that represents a geometric circle. The `Circle` class initializer takes the radius of the circle as a positional parameter called `radius`, which must be non-negative. Since the circle area will be used a lot, it should be stored as an `area` attribute and must also be non-negative. Both attributes must be kept private and be accessible only through the namesake properties (`radius` and `area`). If any of the attributes are changed, the other must be recalculated accordingly. If a negative value is assigned to any attribute, a `ValueError` exception must be raised.

## Task
This exercise will require you to use private attributes and properties. For each property, create a simple getter and a more complex setter that validates the parameter and updates both the requested attribute and the other attribute. Remember that `area=pi*r*r` and `r=sqrt(area/pi)`.
 


# Problem statement
Design a class, `Circle`, that represents a geometric circle. The `Circle` class initializer takes the radius of the circle as a positional parameter called `radius`, which must be non-negative. Since the circle area will be used a lot, it should be stored as an `area` attribute and must also be non-negative. Both attributes must be kept private and be accessible only through the namesake properties (`radius` and `area`). If any of the attributes are changed, the other must be recalculated accordingly. If a negative value is assigned to any attribute, a `ValueError` exception must be raised.

# Task
This exercise will require you to use private attributes and properties. For each property, create a simple getter and a more complex setter that validates the parameter and updates both the requested attribute and the other attribute. Remember that `area=pi*r*r` and `r=sqrt(area/pi)`.
 


Design a class with properties in this exercise.

Introduction

Documentation Tips

General Tips

Data Types and Data Structures Tips

Function Tips

Performance Tips

Safety Tips

Wrapping Up

Exercise 6: Class with Properties

Problem statement