python json dumps

Question

i have the following string, need to turn it into a list without u'':

my_str = "[{u'name': u'squats', u'wrs': [[u'99', 8]], u'id': 2}]"

i can get rid of " by using

import ast
str_w_quotes = ast.literal_eval(my_str)

then i do:

import json
json.dumps(str_w_quotes)

and get

[{\"id\": 2, \"name\": \"squats\", \"wrs\": [[\"55\", 9]]}]

Is there a way to get rid of backslashes? the goal is:

[{"id": 2, "name": "squats", "wrs": [["55", 9]]}]

`json.dumps` returns `'[{"id": 2, "name": "squats", "wrs": [["99", 8]]}]'` for me. — Janne Karila, Mar 07 '13 at 13:37
Are you sure you are seeing backslashes and not just escaped quotes? For example `"\""` is the same as `'"'`. — Janne Karila, Mar 07 '13 at 13:39
The `u` just indicates it's a unicode string in python < 3.0. Are you sure you want to convert to simple strings? — Tim, Mar 07 '13 at 13:39
You don't get rid of `"`, you're evaluating the string and returning a _list_. `str_w_quotes` is a terrible name for a list — John La Rooy, Mar 07 '13 at 13:40
seems like you are passing `my_str` to json.dumps otherwise `str_w_quotes` comes out without the `u`s like JanneKarila says. — vikki, Mar 07 '13 at 13:46
i had similar results when i unintentionally double-dumped string, like `json.dumps(json.dumps(str))` , check you don't do that guys — Alexandr Perfilov, Jul 22 '15 at 18:44

score 19 · Answer 1 · answered Jul 17 '14 at 09:42

19

This works but doesn't seem too elegant

import json
json.dumps(json.JSONDecoder().decode(str_w_quotes))

answered Jul 17 '14 at 09:42

slohr

score 13 · Answer 2 · answered May 01 '14 at 21:56

13

json.dumps thinks that the " is part of a the string, not part of the json formatting.

import json
json.dumps(json.load(str_w_quotes))

should give you:

 [{"id": 2, "name": "squats", "wrs": [["55", 9]]}]

answered May 01 '14 at 21:56

Alex Spencer

2

it should be `json.loads(json.dumps(str_w_quotes))` – webjunkie Feb 12 '18 at 22:32
it works when I tried send blob data to google cloud platform, datastore :) – dipt Apr 29 '19 at 05:49

score 9 · Answer 3 · edited Apr 05 '18 at 04:48

9

You don't dump your string as JSON, rather you load your string as JSON.

import json
json.loads(str_w_quotes)

Your string is already in JSON format. You do not want to dump it as JSON again.

edited Apr 05 '18 at 04:48

Marcello B.

answered Apr 05 '18 at 02:25

Shruti Kar

score 6 · Accepted Answer · answered Mar 07 '13 at 13:32

>>> "[{\"id\": 2, \"name\": \"squats\", \"wrs\": [[\"55\", 9]]}]".replace('\\"',"\"")
'[{"id": 2, "name": "squats", "wrs": [["55", 9]]}]'

note that you could just do this on the original string

>>> "[{u'name': u'squats', u'wrs': [[u'99', 8]], u'id': 2}]".replace("u\'","\'")
"[{'name': 'squats', 'wrs': [['99', 8]], 'id': 2}]"

4 Answers4