text: from datetime import datetime as dt
  
  from dash import Dash
  
  import dash_core_components as dcc
  import dash_html_components as html
  import pandas_datareader as pdr
  from dash.dependencies import Input
  from dash.dependencies import Output
  from .Dash_fun import apply_layout_with_auth, load_object, save_object
  
  url_base = "/dash/app2/"
  
  layout = html.Div(
      [
          html.H1("Stock Tickers"),
          dcc.Dropdown(
              id="my-dropdown",
              options=[
                  {"label": "Coke", "value": "COKE"},
                  {"label": "Tesla", "value": "TSLA"},
                  {"label": "Apple", "value": "AAPL"},
              ],
              value="COKE",
          ),
          dcc.Graph(id="my-graph"),
      ],
      style={"width": "500"},
  )
  
  
  def Add_Dash(server, appbuilder):
      app = Dash(server=server, url_base_pathname=url_base)
      apply_layout_with_auth(app, layout, appbuilder)
  
      @app.callback(Output("my-graph", "figure"), [Input("my-dropdown", "value")])
      def update_graph(selected_dropdown_value):
          df = pdr.get_data_yahoo(selected_dropdown_value, start=dt(2017, 1, 1), end=dt.now())
          return {"data": [{"x": df.index, "y": df.Close}], "layout": {"margin": {"l": 40, "r": 0, "t": 20, "b": 30}}}
  
      return app.server
  