How to get CSV path from Input and send to Flask Backend

Question

I need to get CSV path chosen by the user (from a react/js Input) and then inject it to flask back-end where I already have functions that receive the CSV path and do the work..

Something like :

@app.route("/Execution_maj_annuelle", methods=["GET", "POST"])
def Lancer_Execution_maj_data():
    os.system('clear')
 
    data = request.json['data']
    csvData = pd.read_csv(data)

    return (csvData)

Ans this is my Input :

const [csvFile, setCsvFile]   = useState("");

const data = {
      selection_des_branchements:  csvFile,
    };

  <Input
    name="file"
    id="csv-file"
    multiple
    type="file"
    accept=".csv"
    onChange={(e) => setCsvFile(e.target.files[0])}
  />

And my fetch :

  axios
      .post("http://127.0.0.1:5000/Execution_maj_annuelle", {
          cache: false,
          contentType: false,
          processData: false,
          mode: "no-cors",
          credentials: "include",
          headers:
          ("Content-Type",
          "application/json",
          "Origin",
          "http://localhost:3000",
          "Accept",
          "application/json",
          "Access-Control-Allow-Headers",
          "Origin",
          "X-Requested-With"),
      
          data,
      })
      .then((response) => {
        console.log(response);
      })
      .catch((error) => {
        console.log(error.response);
      });
  };