converting json string to dict in python

Question

I am getting a value in request.body, it is like :

a = '[data={"vehicle":"rti","action_time":"2015-04-21 14:18"}]'

type(a) == str

I want to convert this str to dict. i have tried by doing this

b=json.loads(a)

But am getting error

ValueError: No JSON object could be decoded

this is the data am getting on a post request . And the data is comming in this format only , and am taking it as request.body. thats why its creating a issue. — nilay gupta
– nilay gupta, Commented May 20, 2015 at 13:39

Bryan Oakley · Accepted Answer · 2015-05-20 13:48:41Z

3

The data you are receiving is not properly formatted JSON. You're going to have to do some parsing or data transformation before you can convert it using the json module.

If you know that the data always begins with the literal string '[data=' and always ends with the literal string ']', and that the rest of the data is valid json, you can simply strip off the problematic characters:

b = json.loads(a[6:-1])

If the data can't be guaranteed to be in precisely that format, you'll have to learn what the actual format is, and do more intelligent parsing.

edited May 20, 2015 at 13:48

answered May 20, 2015 at 13:43

Bryan Oakley

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Comments

chaos · Accepted Answer · 2015-05-20 13:39:35Z

0

It is not a valid json format that you are receiving. A valid format is of type:

'{"data":{"vehicle":"rti","action_time":"2015-04-21 14:18"}}'

edited May 20, 2015 at 13:39

answered May 20, 2015 at 13:34

chaos

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3 Comments

ZdaR Over a year ago

This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post - you can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post.

chaos Over a year ago

My understanding on the question was why he was getting a ValueError once he was trying to load the string. I consider it a valid answer that gives an indication to search for a solution that can go either way: implement a valid response if he has control over it or try to find an alternative solution and post a specific question if that fails.

ohmu Over a year ago

This does answer the question. The reason the OP cannot JSON decode the response is because it's not valid JSON.

Narcisse Doudieu Siewe · Accepted Answer · 2015-05-20 14:08:21Z

0

import json

a = '[data={"vehicle":"rti","action_time":"2015-04-21 14:18"}]'
r = a.split("=")
r[:] = r[0].replace("[", ""), r[1].replace("]", "") 
d = '{"%s":%s}'%(r[0],r[1])
dp = json.loads(d)  
print dp

edited May 20, 2015 at 14:08

answered May 20, 2015 at 13:42

Narcisse Doudieu Siewe

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1 Comment

nilay gupta Over a year ago

the a is like this -- a = ' [ data = { ' ' : ' ' } ] '

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