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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, SynEdit, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    SynEdit1: TSynEdit;
    SaveDialog1: TSaveDialog;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var Dateiname: string;
begin
  if SaveDialog1. Execute then
  begin
    if ExtractFileExt(SaveDialog1.FileName) = '' then
      case SaveDialog1.FilterIndex of
        1: DateiName := ChangeFileExt(SaveDialog1.FileName,'.py');


      end
    else
      Dateiname := SaveDialog1.FileName;
    SynEdit1.Lines.SaveToFile(Dateiname);
    SynEdit1.Modified := false;
  end;
end;

end.