Python Dash，回调内打印不起作用

Question

我在运行新的 Dash 版本 (2.11) 时遇到一些问题。 我习惯在回调中使用一些打印语句作为调试功能（打印值、值类型等），并且一切正常，每次单击回调时，打印语句都会在块之后打印在 jupyter_lab 中。

这是代码的最小工作示例，现在打印语句不起作用。 有没有人可以帮我解决这个问题？

from dash import Dash, html
from dash import Dash, dcc, html, Input, Output, State, dash_table, callback_context
import dash_bootstrap_components as dbc

import jupyterlab_dash
from jupyter_dash import JupyterDash

app = Dash(external_stylesheets=[dbc.themes.SLATE])#[dbc.themes.SLATE])
#run the server locally without the aid of the internet connection
# Serve files locally
app.css.config.serve_locally = True
app.scripts.config.serve_locally = True


app = JupyterDash(external_stylesheets=[dbc.themes.SLATE] )#[dbc.themes.SLATE])         SLATE #2

#run the server locally without the aid of the internet connection
# Serve files locally
app.css.config.serve_locally = True
app.scripts.config.serve_locally = True


app.layout = dbc.Container(
                            [html.Button('click-me', id='button', n_clicks=0),
                             html.H1('click-me', id = "text")
                            ]
                          )


@app.callback(
    
    [    
    Output("text", "children")
    ]
    ,
    [
    Input("button", "n_clicks"),
    ]
)
def button(n_clicks):
    print("button is pressed")
     
    return ["button was pressed {} times ".format(n_clicks)]


if __name__ == '__main__':
    app.run_server(debug=True,port = 8057, jupyter_mode="external")