lines=True parameter for the Json Type Provider and Json.Net library? - f#

Question

I am working on this Kaggle competition. The Jupyter notebooks on Kaggle only support R and Python and I wanted to use F# locally. The problem is that the datasets are .json files and both the F# Json Type Provider and Newtonsoft libraries fail when trying to parse the files.
Here are examples of the code failing in F#:
open FSharp.Data
type Context = JsonProvider<"train.json">
let context = Context.
and
open System
open System.IO
open Newtonsoft.Json
open Newtonsoft.Json.Linq
let object = JObject.Parse(File.ReadAllText("train.json"));
object
This Python example uses these line of code to parse them correctly:
train = pd.read_json('../input/stanford-covid-vaccine/train.json', lines=True)
test = pd.read_json('../input/stanford-covid-vaccine/test.json', lines=True)
In the notebook, the author says that without the "lines=True" parameter, the read_json method fails with this trailing error.
My question: assuming tis is the same error, is there a way to apply that same kind of "lines=true" to the .NET libraries to parse the json?

Answer 1

I've seen a few datasets where the format was one valid JSON record per line:
{"event":"nothing 1"}
{"event":"nothing 2"}
{"event":"nothing 3"}
This is not valid JSON overall. I think you can either parse it line-by-line or you can turn it into valid JSON. For line-by-line parsing (which may be more efficient as you can do this in a streaming fashion), I would use:
open FSharp.Data
type Log = JsonProvider<"""{"event":"nothing 1"}""">
for line in File.ReadAllLines("some.json") do
let l = Log.Parse(line)
printfn "%s" l.Event