Python for Beginners - Part 6 - Web API connection, Dictionary, Environment Variable and Decorator

Last part of articles about the Microsoft's Python for Beginners series.
All the examples from the playlist are available in this GitHub repository: Python Examples.

Objective

You will learn how to make connect with web APIs, manipulate dictionaries, read environment variables and use decorators.
A Python file was created to demonstrate each example.

Topics

• api/post.py
• dictionary.py
• keys.py
• decorators.py

api/post.py

Making a POST request to a web API.
The example file was created inside of a folder named api.

First, install the requests library:

pip install requests

The result will be:

Then, run this command:

python .\examples\api\post.py

The result will be:

dictionary.py

Creating and manipulating dictionaries.

Executing the command below:

python .\examples\dictionary.py

The result is:

keys.py

Reading environment variables.

Create a .env file containing a secret key.

Update the requirements.txt file by adding python-dotenv.

Let's use a virtual environment again by executing the commands below:

python -m venv venv

.\venv\Scripts\Activate.ps1

Install the python_dotenv package inside the venv:

pip install -r requirements.txt

The result will be:

Finally, run this command:

python .\examples\keys.py

The result will be:

decorators.py

How to use decorators in functions.

Run the command:

python .\examples\decorators.py

The result will be:

Conclusion

We have finally ended this series!
Now you have the basics to start working with Python.