How To Convert Python Dictionary To JSON?

JSON stands for JavaScript Object Notation. It means that a script (executable) file which is made of text in a programming language, is used to store and transfer the data. Python supports JSON through a built-in package called json. To use this feature, we import the JSON package in Python script. The text in JSON is done through quoted-string which contains a value in key-value mapping within { }. It is similar to the dictionary in Python.
Note: For more information, refer to Read, Write and Parse JSON using Python

Function Used:

• json.dumps() 
  
• json.dump() 
  

Syntax: json.dumps(dict, indent)
Parameters:

• dictionary – name of dictionary which should be converted to JSON object. 
  
• indent – defines the number of units for indentation 
  

Syntax: json.dump(dict, file_pointer)
Parameters:

• dictionary – name of dictionary which should be converted to JSON object. 
  
• file pointer – pointer of the file opened in write or append mode. 
  

Example 1:

Python3

import json

# Data to be written
dictionary ={
  "id": "04",
  "name": "sunil",
  "department": "HR"
}

# Serializing json
json_object = json.dumps(dictionary, indent = 4)
print(json_object)

Output

{
    "id": "04",
    "name": "sunil",
    "department": "HR"
}

Output:

{
    "department": "HR",
    "id": "04",
    "name": "sunil"
}

Example 2:

Python3

import json

# Data to be written
dictionary ={
    "name" : "sathiyajith",
    "rollno" : 56,
    "cgpa" : 8.6,
    "phonenumber" : "9976770500"
}

with open("sample.json", "w") as outfile:
    json.dump(dictionary, outfile)

Output: