public/subjects/devops/numerical_operations

Numerical operation

Instructions

Create a file numerical_operations.py containing the following functions:

• add(a, b)
• subtract(a, b)
• multiply(a, b)
• power(a, b)
• square(a)

We assume that a and b are numbers (int or float).

[Optional] Use a virtual environnement to run python code locally

Virtual environments can help you to run your code locally.

Learn all you need about virtual environments.

Here, we setup a virtual environment with Miniconda.

First, download and install Miniconda.

Then, use those commands to create a new environment:

# create a new virtual environment for python 3.10
$ conda create --name my_env python=3.10

# activate your new environment
$ conda activate my_env

# From now, all python command use this python version in this terminal
$ python --version
Python 3.10.4

We advise you to create one virtual environment per python project. Later, we could also install external packages on our environment.

Usage

Here is a possible test.py to test your functions:

import numerical_operations

print(numerical_operations.add(2, 2))
print(numerical_operations.subtract(10, 5))
print(numerical_operations.multiply(3, 4))
print(numerical_operations.power(3, 3))
print(numerical_operations.square(3))

$ python test.py
4
5
12
27
9
$

Hints

• You could import math at the start of your file to use the functions defined in that library (for example math.sqrt()).

References

• Square root in Python
• Operations in Python