How to Convert a Dictionary to a JSON String in Python

How to Convert a Dictionary to a JSON String in Python ?

Answer

To convert a dictionary to a JSON string in Python, you can use the `json.dumps()` function from the `json` module. This allows you to create a JSON string representation of the dictionary.

✐ Examples

1 Converting a Dictionary to a JSON String Using `json.dumps()`

We can convert a dictionary to a JSON string in Python using the `json.dumps()` function. This example demonstrates how to declare and initialize a dictionary, use the `json.dumps()` function to convert the dictionary to a JSON string, and print the resulting JSON string.

For example,

We start by importing the `json` module.
We declare and initialize a dictionary named my_dict with integer keys and string values.
We use the `json.dumps()` function to convert the dictionary to a JSON string.
We print the resulting JSON string.

Python Program

import json

my_dict = {
    1: 'One',
    2: 'Two',
    3: 'Three'
}

# Convert the dictionary to a JSON string using json.dumps()
json_string = json.dumps(my_dict)

# Print the resulting JSON string
print('JSON string:')
print(json_string)

Output

JSON string:
{"1": "One", "2": "Two", "3": "Three"}

2 Converting a Dictionary with Complex Values to a JSON String

We can convert a dictionary with complex values to a JSON string in Python using the `json.dumps()` function. This example demonstrates how to declare and initialize a dictionary with complex values, use the `json.dumps()` function to convert the dictionary to a JSON string, and print the resulting JSON string.

For example,

We start by importing the `json` module.
We declare a dictionary named my_dict with integer keys and values that are dictionaries.
We use the `json.dumps()` function to convert the dictionary to a JSON string.
We print the resulting JSON string.

Python Program

import json

my_dict = {
    1: {'name': 'John', 'age': 30},
    2: {'name': 'Jane', 'age': 25}
}

# Convert the dictionary to a JSON string using json.dumps()
json_string = json.dumps(my_dict, indent=4)

# Print the resulting JSON string
print('JSON string:')
print(json_string)

Output

JSON string:
{
    "1": {
        "name": "John",
        "age": 30
    },
    "2": {
        "name": "Jane",
        "age": 25
    }
}

Summary

In this tutorial, we learned How to Convert a Dictionary to a JSON String in Python language with well detailed examples.

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