3 Ways to Convert Python Dictionary into JSON Format

Dictionaries in Python are used to store key-value pairs. To convert dictionaries to JSON format, which is a lightweight and readable format commonly used for data transmission and storage, we can use simple methods in Python.

Convert Dictionary to JSON

Method 1:

Using the json Module Python provides the built-in json module, which offers a straightforward way to convert dictionaries to JSON format(Python dict to json). The module includes the json.dumps() function (json dumps method), which serializes Python objects into JSON strings. Here’s an example:

import json

# Sample dictionary
data = {
    "name": "John Doe",
    "age": 30,
    "email": "johndoe@example.com"
}

# Convert dictionary to JSON
json_data = json.dumps(data)

# Display the JSON string
print(json_data)

Output

The output is a json string.

{"name": "John Doe", "age": 30, "email": "johndoe@example.com"}

Method 2:

Using the pprint Module If you prefer a more human-readable JSON format with proper indentation, you can use the pprint module in combination with json.dumps(). The pprint module provides a pprint() function – that prettyprints data structures. Here’s an example:

import json
import pprint

# Sample dictionary
data = {
    "name": "John Doe",
    "age": 30,
    "email": "johndoe@example.com"
}

# Convert dictionary to JSON with pretty printing
json_data = json.dumps(data, indent=4)
pprint.pprint(json_data)

Output

{
    "name": "John Doe",
    "age": 30,
    "email": "johndoe@example.com"
}

Method 3

Using the json Library with indent Parameter If you only need basic indentation without additional formatting, you can directly utilize the indent parameter of json.dumps(). This parameter specifies the number of spaces to use for indentation. Here’s an example:

import json

# Sample dictionary
data = {
    "name": "John Doe",
    "age": 30,
    "email": "johndoe@example.com"
}

# Convert dictionary to JSON with indentation
json_data = json.dumps(data, indent=4)

# Display the JSON string
print(json_data)

Output

{
    "name": "John Doe",
    "age": 30,
    "email": "johndoe@example.com"
}

Conclusion

• In this blog post, we explored three quick and easy methods to format Python dictionaries to JSON. The module (JSON) provides a simple way to convert dictionaries to JSON strings, while the pprint module allows for more human-readable and formatted output.
• Additionally, we saw how to use the indent parameter of json.dumps() to control the indentation level of the resulting JSON string. By leveraging these methods, you can efficiently format dictionaries to JSON format in your Python applications.

Related