Day 15 Task: Python Libraries for DevOps

Reading JSON and YAML in Python

• As a DevOps Engineer you should be able to parse files, be it txt, json, yaml, etc.

• You should know what all libraries one should use in Python for DevOps.

• Python has numerous libraries like os, sys, json, yaml etc that a DevOps Engineer uses in day-to-day tasks.

• Tasks 1 - Create a Dictionary in Python and write it to a Json File.
  Json. Dumps ()

• 1. To create a dictionary in Python and write it to a JSON file, you can follow these steps:

     1. Create a Dictionary: Define the dictionary with the key-value pairs you want.

     2. Import the json Module: This module provides functions to work with JSON data.

     3. Write the Dictionary to a JSON File: Use the json.dump() function to write the dictionary to a file in JSON format.

Explanation

• import json: This imports the JSON module, which provides functions for working with JSON data.

• data: This is a Python dictionary containing various types of data, such as strings, integers, lists, and Booleans.

• open(file_name, 'w') as file: This opens a file named data.json in write mode. If the file does not exist, it will be created. If it does exist, it will be overwritten.

• json.dump(data, file, indent=4): This function converts the Python dictionary data into a JSON-formatted string and writes it to the file data.json. The indent=4 argument is optional but makes the JSON output more readable by adding indentation.

  Running the Script

  When you run this script, it will create a file named data.json in the same directory as your script. The contents of data.json will look like this:

• 

• Tasks 2 - Read a json file services.json kept in this folder and print the service names of every cloud service provider.

• output

  aws : ec2

• azure : VM

• gcp : compute engine

To accomplish this task, we would typically write a script to read the JSON file and extract the required information.

Here’s a Python script that reads services. Json and prints the service names for each cloud service provider:

Make sure services.json is structured properly and adjust the JSON parsing if necessary. Here’s a sample JSON structure that the script expects:

Save this Python script to a file and run check you will get below output as expected.

Task 3 - Read YAML file using python, file services.yaml and read the contents to convert yaml to json

Install Required Libraries

1. First, you need to install PyYAML if you haven't already:
pip install pyyaml

2. Here's the Python code to read the services.yaml file and convert its contents to JSON:

Explanation:

• yaml.safe_load(file): This function reads the YAML file and converts it into a Python dictionary.

• json.dumps(yaml_data, indent=4): This function converts the Python dictionary into a JSON-formatted string with indentation for readability.

Example services.yaml File Structure:

This script will read the contents of services.yaml, convert it to JSON format, and print the resulting JSON string and it will save to service.json

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