Part of the confusion here is that writing '{"key": "value\nda"}' in python is NOT producing a string like this: {"key": "value\nda"} but instead like thi

Part of the confusion here is that writing '{"key": "value\nda"}' in python is NOT producing a string like this: {"key": "value\nda"} but instead like this: {"key": "value da"} you need to either double-escape it, or use raw strings. In python these both: '{"key": "value\\nda"}' r'{"key": "value\nda"}' will produce the following string: {"key": "value\nda"}