Get json data

[JohnnyCoffee]

I have a working jquery file that sends data in json format to a wsgi file as follows:

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$(document).ready(function() {       $('.btn').text('search').click(function() {         // atribui valor a variavel         var wsi_search = $('.ws_search').val();         // set method ajax:         $.ajax({             type: 'POST',             url: '/kosmos',             data: { wsi_search: wsi_search },             dataType: 'json',             // function shoot efect:             beforeSend : function() {             },             // end callback:             complete : function() {             },             // shoot event moment feedback server:             success : function() {                 alert('ok')             },             // monstra erro na requisição             error : function() {             },         });     }); });

How do I get the json data?
Below is the wsgi code:

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from wsgiref.simple_server import make_server from wsgiref.util import request_uri   def apps(environ, ws_output):       ws_mtd = environ['REQUEST_METHOD']     ws_url = request_uri(environ, include_query=True)       if ws_mtd == 'POST':                   # Tratar o method post :         status = '200 OK'         headers = [('Content-type', 'text/html; charset=utf-8')]         ws_output(status, headers)         return [str('Dados Json').encode()]   with make_server('', 8000, apps) as httpd:     print('Running wsgi\nBrowser access - http://127.0.0.1:8000\nCrl+c for exit command or Crl+z for stop')     httpd.serve_forever()