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

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.