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Day 15 Task: Python Libraries for DevOps

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Sujata Kumari
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3 min read

What is JSON

JSON stands for JavaScript Object Notation , is a popular data format used for representing structured data. It's common to transmit and receive data between a server and web application in JSON format. In Python, JSON exists as a string. For example: p = '{"name": "Bob", "languages": ["Python", "Java"]}'

  • Example of JSON Syntax

{
    "name": "John Smith",
    "age": 35,
    "email": "john@example.com",
    "phone_numbers": [
        {
            "type": "home",
            "number": "555-1234"
        }

    ]
}

Tasks:

  1. Create a Dictionary in Python and write it to a JSON File.

      import json

  my_dict = {
      "name": "John",
      "age": 30,
      "city": "New York"
  }

  with open("my_dict.json", "w") as file:
      json.dump(my_dict, file)

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

    • Open your Python file (cloud_services.py) in your text editor.

    • Add the following code to your Python file to read the services.json file and print the service names of every cloud service provider:

    import json

    with open('services.json') as f:
        data = json.load(f)

    for provider in data:
        print(provider['name'], ':', provider['services'][0]['name'])

  • save your Python file (cloud_services.py).

  • Open a command prompt or terminal window and navigate to the directory where your Python file and services.json file are saved.

  • Run the Python file by typing the following command and pressing Enter:

    python cloud_services.py
  • The output should be displayed in the command prompt or terminal window:
    yamlCopy codeaws : ec2
    azure : VM
    gcp : compute engine
  • That's it! You have successfully read the services.json file and printed the service names of every cloud service provider using Python.
    [
      {
        "name": "aws",
        "services": "ec2"
      },
      {
        "name": "azure",
        "services": "VM"
      },
      {
        "name": "gcp",
        "services": "compute engine"
      }
    ]

    import json

    # Read the JSON data from the file
    with open('services.json') as f:
        data = json.load(f)

    # Print the service names for each cloud service provider
    for provider in data:
        print(provider['name'], ':', provider['services'])

  1. Read YAML file using Python, file services.yaml and read the contents to convert yaml to json

    To read a YAML file using Python and convert it to JSON, you can use the PyYAML and JSON modules. Here's an example of how to do it:

    COPY

      pythonCopy codeimport yaml
  import json

  # Open the YAML file and read its contents
  with open('services.yaml', 'r') as f:
      yaml_data = yaml.safe_load(f)

  # Convert the YAML data to JSON
  json_data = json.dumps(yaml_data)

  # Print the JSON data
  print(json_data)

    In this example, we first open the services.yaml file in read mode using a with block, which automatically closes the file when we're done with it. We then use the yaml.safe_load() method to parse the YAML data into a Python object.

    Next, we use the json.dumps() method to convert the Python object to JSON format, which can be used for further processing. Finally, we print the JSON data to the console using the print() function.

    Note that the yaml.safe_load() method is used instead of yaml.load() for security reasons, as it only allows loading of simple Python objects (e.g. strings, lists, dictionaries), and does not