How do i convert a json to a string in python?

View Discussion

Nội dung chính Show

JSON in Python
Parse JSON - Convert from JSON to Python
Convert from Python to JSON
Format the Result
Order the Result
How do I convert a json object to a string in Python?
How do I convert a JSON to a string?
How do I read a JSON file and convert to string in Python?
How do you parse a JSON string in Python?

Improve Article

Save Article

Read

Discuss

View Discussion

Improve Article

Save Article

Data in transmitted across platforms using API calls. Data is mostly retrieved in JSON format. We can convert the obtained JSON data into String data for the ease of storing and working with it.

Let’s see how to convert JSON to String.

Method #1: Json to String on dummy data using “json.dumps”

Python3

import json

a = {"name" : "GeeksforGeeks", "Topic" : "Json to String", "Method": 1}

y = json.dumps(a)

print(y)

print(type(y))

Output:

Method #2: Json to String using an API using requests and “json.dumps”

Python3

Output:

JSON is a syntax for storing and exchanging data.

JSON is text, written with JavaScript object notation.

JSON in Python

Python has a built-in package called json, which can be used to work with JSON data.

Example

Import the json module:

import json

Parse JSON - Convert from JSON to Python

If you have a JSON string, you can parse it by using the json.loads() method.

Example

Convert from JSON to Python:

import json

# some JSON:
x = '{ "name":"John", "age":30, "city":"New York"}'

# parse x:
y = json.loads(x)

# the result is a Python dictionary:
print(y["age"])

Try it Yourself »

Convert from Python to JSON

If you have a Python object, you can convert it into a JSON string by using the json.dumps() method.

Example

Convert from Python to JSON:

import json

# a Python object (dict):
x = {
"name": "John",
"age": 30,
"city": "New York"
}

# convert into JSON:
y = json.dumps(x)

# the result is a JSON string:
print(y)

Try it Yourself »

You can convert Python objects of the following types, into JSON strings:

dict
list
tuple
string
int
float
True
False
None

Example

Convert Python objects into JSON strings, and print the values:

import json

print(json.dumps({"name": "John", "age": 30}))
print(json.dumps(["apple", "bananas"]))
print(json.dumps(("apple", "bananas")))
print(json.dumps("hello"))
print(json.dumps(42))
print(json.dumps(31.76))
print(json.dumps(True))
print(json.dumps(False))
print(json.dumps(None))

Try it Yourself »

When you convert from Python to JSON, Python objects are converted into the JSON (JavaScript) equivalent:

Python	JSON
dict	Object
list	Array
tuple	Array
str	String
int	Number
float	Number
True	true
False	false
None	null

Example

Convert a Python object containing all the legal data types:

import json

x = {
"name": "John",
"age": 30,
"married": True,
"divorced": False,
"children": ("Ann","Billy"),
"pets": None,
"cars": [
{"model": "BMW 230", "mpg": 27.5},
{"model": "Ford Edge", "mpg": 24.1}
]
}

print(json.dumps(x))

Try it Yourself »

Format the Result

The example above prints a JSON string, but it is not very easy to read, with no indentations and line breaks.

The json.dumps() method has parameters to make it easier to read the result:

Example

Use the indent parameter to define the numbers of indents:

json.dumps(x, indent=4)

Try it Yourself »

You can also define the separators, default value is (", ", ": "), which means using a comma and a space to separate each object, and a colon and a space to separate keys from values:

Example

Use the separators parameter to change the default separator:

json.dumps(x, indent=4, separators=(". ", " = "))

Try it Yourself »

Order the Result

The json.dumps() method has parameters to order the keys in the result:

Example

Use the sort_keys parameter to specify if the result should be sorted or not:

json.dumps(x, indent=4, sort_keys=True)

Try it Yourself »

How do I convert a json object to a string in Python?

Use json. dumps() to convert a JSON to a string dumps(obj) with obj as the dict object to be converted to a JSON string.

How do I convert a JSON to a string?

Use the JavaScript function JSON. stringify() to convert it into a string. const myJSON = JSON. stringify(obj);

How do I read a JSON file and convert to string in Python?

Load the json file into a file object and read its contents with the file. read() function, which returns a string containing the file's contents. Use the json. loads() function to convert this string object into the required python dictionary and store the result in a variable jsonData.