how to convert dataTable to json form

[bobwatcherx]

I want to change the data, which is taken from the datatable widget to json form. Can it ?
from here

John
Smith
43
Jack
Brown
19
Alice
Wong
30

be data dict like 
[{"name":"john","lastname":"smith","age":20},{....}]

my code Here

from flet import *

def main(page: Page):
    
    alldata = []
    def showpdf(e):
        # print(datatable.rows[0].cells[0].content.value)
        for x in datatable.rows:
            for r in x.cells:
                data = r.content.value
                new_data = " ".join(data.split("\n"))
                print(new_data)
              

    datatable =    DataTable(
            columns=[
                DataColumn(Text("First name")),
                DataColumn(Text("Last name")),
                DataColumn(Text("Age"), numeric=True),
            ],
            rows=[
                DataRow(
                    cells=[
                        DataCell(Text("John")),
                        DataCell(Text("Smith")),
                        DataCell(Text("43")),
                    ],
                ),
                DataRow(
                    cells=[
                        DataCell(Text("Jack")),
                        DataCell(Text("Brown")),
                        DataCell(Text("19")),
                    ],
                ),
                DataRow(
                    cells=[
                        DataCell(Text("Alice")),
                        DataCell(Text("Wong")),
                        DataCell(Text("30")),
                    ],
                ),
            ],
        )    

    page.add(
     Column([
        datatable,
        ElevatedButton("print",
        on_click=showpdf

            )

        ])
    )

flet.app(target=main)

[ndonkoHenri]

You will have to do it yourself by iterating over each column and rows and grabing their values.
@StanMathers is doing an interesting work with datatables here.
I think you can submit a feature request there for the implementation of this datatable to json stuff.