How to implement custom indentation when pretty-printing with the JSON module in python?

How to implement custom indentation when pretty-printing with the JSON module in python?

The json module in Python provides a way to customize the indentation when pretty-printing JSON data using the indent parameter of the json.dump() and json.dumps() functions. You can specify the number of spaces or a custom string to use for indentation.

Here's how you can implement custom indentation when pretty-printing with the json module:

import json # Create a Python dictionary to be pretty-printed data = { "name": "John Doe", "age": 30, "city": "New York", "pets": ["dog", "cat"], } # Customize the indentation with a custom string (e.g., four spaces) custom_indent = " " # Serialize the data to a JSON-formatted string with custom indentation json_string = json.dumps(data, indent=custom_indent) # Print the JSON string with custom indentation print(json_string)

In this example, we:

  1. Create a Python dictionary called data.

  2. Customize the indentation by setting the custom_indent variable to four spaces.

  3. Use json.dumps() to serialize the data dictionary into a JSON-formatted string and specify the indent parameter with the custom_indent variable to apply custom indentation.

  4. Print the JSON string with custom indentation.

The output will be:

{ "name": "John Doe", "age": 30, "city": "New York", "pets": [ "dog", "cat" ] }

You can customize the custom_indent variable to use any string or number of spaces you prefer for indentation.

Examples

  1. "Python JSON custom indentation example"

    • Description: Demonstrating how to specify custom indentation when pretty-printing JSON data in Python using the JSON module.
    # Python JSON custom indentation example import json data = {"name": "John", "age": 30, "city": "New York"} custom_indentation = 4 print(json.dumps(data, indent=custom_indentation))

  2. "How to set custom indentation in Python JSON dump"

    • Description: Explaining how to set custom indentation while dumping JSON data in Python.
    # How to set custom indentation in Python JSON dump import json data = {"name": "Alice", "age": 25, "city": "London"} custom_indentation = 2 with open("data.json", "w") as json_file: json.dump(data, json_file, indent=custom_indentation)

  3. "Python JSON pretty-print with custom indentation"

    • Description: Illustrating how to pretty-print JSON data with custom indentation in Python.
    # Python JSON pretty-print with custom indentation import json data = {"name": "Bob", "age": 35, "city": "Paris"} custom_indentation = "\t" # Using tab for indentation print(json.dumps(data, indent=custom_indentation))

  4. "Custom indentation in Python JSON dumps"

    • Description: Providing instructions on how to apply custom indentation while using json.dumps() in Python.
    # Custom indentation in Python JSON dumps import json data = {"fruit": "apple", "color": "red"} custom_indentation = "--" # Using dashes for indentation print(json.dumps(data, indent=custom_indentation))

  5. "How to format JSON output with custom indentation in Python"

    • Description: Demonstrating the process of formatting JSON output with custom indentation in Python.
    # How to format JSON output with custom indentation in Python import json data = {"animal": "cat", "sound": "meow"} custom_indentation = " " * 4 # Using 4 spaces for indentation print(json.dumps(data, indent=custom_indentation))

  6. "Python JSON pretty-print with custom tab indentation"

    • Description: Showing how to pretty-print JSON data with custom tab indentation in Python.
    # Python JSON pretty-print with custom tab indentation import json data = {"key": "value", "number": 123} custom_indentation = "\t\t" # Using two tabs for indentation print(json.dumps(data, indent=custom_indentation))

  7. "How to customize JSON indentation in Python"

    • Description: Providing guidance on customizing JSON indentation while working with JSON data in Python.
    # How to customize JSON indentation in Python import json data = {"country": "Japan", "capital": "Tokyo"} custom_indentation = "-" * 2 # Using hyphens for indentation print(json.dumps(data, indent=custom_indentation))

  8. "Python JSON dump with custom spacing"

    • Description: Demonstrating how to perform JSON dumping with custom spacing in Python.
    # Python JSON dump with custom spacing import json data = {"language": "Python", "version": "3.9"} custom_indentation = " " * 6 # Using 6 spaces for indentation with open("output.json", "w") as json_file: json.dump(data, json_file, indent=custom_indentation)

  9. "Customizing JSON indentation in Python JSON module"

    • Description: Explaining the process of customizing JSON indentation using the Python JSON module.
    # Customizing JSON indentation in Python JSON module import json data = {"planet": "Earth", "population": 7.9e9} custom_indentation = "." * 3 # Using dots for indentation print(json.dumps(data, indent=custom_indentation))

  10. "How to specify custom JSON formatting in Python"

    • Description: Providing instructions on specifying custom JSON formatting, including indentation, in Python.
    # How to specify custom JSON formatting in Python import json data = {"color": "blue", "shape": "circle"} custom_indentation = " " * 8 # Using 8 spaces for indentation print(json.dumps(data, indent=custom_indentation))

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