How to convert following string to JSON in python

Question

How can i convert the below string to JSON using python?

str1 = "{'a':'1', 'b':'2'}"

That string is JSON. Do you mean how to parse that JSON into a Python dictionary? — Amadan
– Amadan, Commented Oct 24, 2019 at 11:47
Hello and welcome to SO. You may want to read about How to Ask and try doing a minimal searching effort by yourself. Hint: it's in the stdlib. — bruno desthuilliers
– bruno desthuilliers, Commented Oct 24, 2019 at 11:52
Does this answer your question? Convert JSON string to dict using Python — Trenton McKinney
– Trenton McKinney, Commented Apr 15, 2020 at 22:34
This string is not JSON. It uses single-quotes around the keys and values. — jkr
– jkr, Commented Apr 15, 2020 at 23:00
str1 = str1.replace("'", '"') then use the solution in the link. — Trenton McKinney
– Trenton McKinney, Commented Apr 16, 2020 at 0:29

bruno desthuilliers · Accepted Answer · 2019-10-24 11:57:11Z

14

The json library in python has a function loads which enables you to convert a string (in JSON format) into a JSON. Following code for your reference:

import json

str1 = '{"a":"1", "b":"2"}'
data = json.loads(str1)

print(data)

Note: You have to use ' for enclosing the string, whereas " for the objects and its values.

edited Oct 24, 2019 at 11:57

bruno desthuilliers

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answered Oct 24, 2019 at 11:55

Rahul Soni

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Comments

jkr · Accepted Answer · 2020-04-15 23:03:16Z

2

The string in OP's question is not JSON because the keys and values are enclosed by single-quotes. The function ast.literal_eval can be used to parse this string into a Python dictionary.

import ast
str1 = "{'a':'1', 'b':'2'}"
d = ast.literal_eval(str1)
d["a"]  # output is "1"

Other answers like https://stackoverflow.com/a/58540688/5666087 and https://stackoverflow.com/a/58540879/5666087 were able to use the json library because they changed str1 from "{'a':'1', 'b':'2'}" to '{"a":"1", "b":"2"}'. The former is invalid JSON, whereas the latter is valid JSON.

answered Apr 15, 2020 at 23:03

jkr

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Comments

tyb9900 · Accepted Answer · 2019-10-24 12:10:58Z

-2

import json

str1 = '{"a":"1", "b":"2"}'

jsonData = json.loads(str1)

print(jsonData["a"])

Reference : LINK

edited Oct 24, 2019 at 12:10

answered Oct 24, 2019 at 11:45

tyb9900

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2 Comments

bruno desthuilliers Over a year ago

"ValueError: Expecting property name: line 1 column 2 (char 1)" - better to test your code before posting. Also, the reference documentation is docs.python.org/3/library/json.html

Rahul Soni Over a year ago

Hi @tyb9900! You had an good effort to contribute the answer. But, the string for JSON should be enclosed in ' and not in ". Hope, that will help you improve your answer.

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