convert string to json or list in python

Question

i have this string [['18', '9'], ['18', '9'], ['18', '9'], ['18', '9'], ['18', '9'], ['18', '9']]

so I test all the ways to find out how to convert it to a list or a JSON format in python

when i try to convert it using json.loads()

it shows error

items = '[['18', '9'], ['18', '9'], ['18', '9'], ['18', '9'], ['18', '9'], ['18', '9']]'
item = json.loads(items)

and the error is

json.decoder.JSONDecodeError: Expecting value: line 1 column 3 (char 2)

JSON requires double quotes around strings, not single quotes. — Barmar, Mar 22 '21 at 19:52
Your `item` assignment has invalid syntax. If the string has single quotes inside it, either use double quotes around it or escape the single quotes. — Barmar, Mar 22 '21 at 19:53
Does this answer your question? [Convert a list to json objects](https://stackoverflow.com/questions/37661863/convert-a-list-to-json-objects) — Lakshya Srivastava, Mar 22 '21 at 20:00

score 3 · Accepted Answer · answered Mar 22 '21 at 19:56

3

That's not JSON, it's Python syntax. Use ast.literal_eval() to parse it.

import ast

items = "[['18', '9'], ['18', '9'], ['18', '9'], ['18', '9'], ['18', '9'], ['18', '9']]"
result = ast.literal_eval(items)

answered Mar 22 '21 at 19:56

Barmar

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score 1 · Answer 2 · answered Mar 22 '21 at 19:55

Your quoting wrong, this works:

>>> import json
>>> items = '[["18", "9"], ["18", "9"], ["18", "9"], ["18", "9"], ["18", "9"], ["18", "9"]]'
>>> item = json.loads(items)
>>> print(item)
[['18', '9'], ['18', '9'], ['18', '9'], ['18', '9'], ['18', '9'], ['18', '9']]

convert string to json or list in python

2 Answers2