Dict to json file python

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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 

dictionary ={ 

  "id": "04", 

  "name": "sunil", 

  "department": "HR"

} 

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

dictionary ={

    "name" : "sathiyajith",

    "rollno" : 56,

    "cgpa" : 8.6,

    "phonenumber" : "9976770500"

}

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

    json.dump(dictionary, outfile)

Output:
 

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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 value in key-value mapping within { }. It is similar to the dictionary in Python.
Function Used: 

• json.load(): json.loads() function is present in python built-in ‘json’ module. This function is used to parse the JSON string.
   

Syntax: json.load(file_name)
Parameter: It takes JSON file as the parameter.
Return type: It returns the python dictionary object. 
 

Example 1: Let’s suppose the JSON file looks like this:
 

We want to convert the content of this file to Python dictionary. Below is the implementation.
 

Python3

import json

with open('data.json') as json_file:

    data = json.load(json_file)

    print("Type:", type(data))

    print("\nPeople1:", data['people1'])

    print("\nPeople2:", data['people2'])

Output :
 

Example 2: Reading nested data 
In the above JSON file, there is a nested dictionary in the first key people1. Below is the implementation of reading nested data.
 

Python3

import json

with open('data.json') as json_file:

    data = json.load(json_file)

    print(data['people1'][0])

    print("\nPrinting nested dictionary as a key-value pair\n")

    for i in data['people1']:

        print("Name:", i['name'])

        print("Website:", i['website'])

        print("From:", i['from'])

        print()

Output :