Replacing JSON value in python

Question

EDIT: sorry, i had a hard to see uppercase/lowercase typo. please someone delete this question.

I am trying to change the value of a json object with simplejson. The problem is that instead of replacing it, it is adding another entry with the same key.

{
  "main" : "value_to_replace"
}

and after doing this in python:

json["main"] = "replaced"

becomes

{
  "main" : "value_to_replace",
  "main" : "replaced"
}

which is infact still valid json.

Answer 1

it works for me.

import simplejson as json

str = """{
  "main" : "value_to_replace"
}"""
data = json.loads(str)
print data
data["main"] = "test"
print data

Output:

(test)alexandr@alexandr:~/Desktop$ python test.py
{'main': 'value_to_replace'}
{'main': 'test'}