How To Convert Python Dictionary (dict) to JSON

(And Write It To A File)

To convert a dictionary to a JSON string in Python, you can use the json module's dumps() method.

This method takes a dictionary as input and returns a JSON-formatted string.

Here is an example of how to use the dumps() method to convert a dictionary to a JSON string:

import json

my_dict = {
  "key1": "value1",
  "key2": "value2",
  "key3": "value3"
}

json_string = json.dumps(my_dict)
print(json_string)

This code creates a dictionary my_dict and then uses the json.dumps() method to convert it to a JSON string. The resulting JSON string will be formatted like this:

'{"key1": "value1", "key2": "value2", "key3": "value3"}'

How to write dictionary to a file

You can also use the json.dump() method to write the JSON string to a file instead of printing it to the console.

This method takes a file object (returned from open function) as its first argument and the dictionary as its second argument.

Here is an example of how to use the json.dump() method to write a dictionary to a file:

import json

my_dict = {
  "key1": "value1",
  "key2": "value2",
  "key3": "value3"
}

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

This code creates a dictionary my_dict and then opens a file named my_file.json in write mode.

It then uses the json.dump() method to write my_dict to the file and automatically closes the file when it is done.

The resulting file will contain the JSON-formatted string representation of my_dict.