Python json.loads ValueError, expecting delimiter

Question

I am extracting a postgres table as json. The output file contains lines like:

{\"data\": {\"test\": 1, \"hello\": \"I have \\\" !\"}, \"id\": 4}


        

Answer 1

Try the ways source.replace('""', '') or sub it, cause "" in the source will make json.loads(source) can not distinguish them.

Answer 2

You can specify so called “raw strings”:

>>> print r'{"data": {"test": 1, "hello": "I have \" !"}, "id": 4}'
{"data": {"test": 1, "hello": "I have \" !"}, "id": 4}

They don’t interpret the backslashes.

Usual strings change \" to ", so you can have " characters in strings that are themselves limited by double quotes:

>>> "foo\"bar"
'foo"bar'

So the transformation from \" to " is not done by json.loads, but by Python itself.

Answer 3

for my instance, i wrote:

STRING.replace("': '", '": "').replace("', '", '", "').replace("{'", '{"').replace("'}", '"}').replace("': \"", '": "').replace("', \"", '", "').replace("\", '", '", "').replace("'", '\\"')

and works like a charm.

Answer 4

Try this:

json.loads(r'{"data": {"test": 1, "hello": "I have \" !"}, "id": 4}')

If you have that string inside a variable, then just:

json.loads(data.replace("\\", r"\\"))

Hope it helps!