如何在Dash中获取当前路径？

import dash
from dash import dcc
from dash import html
from dash.dependencies import Input, Output

app = dash.Dash(__name__)
app.layout = html.Div([
    dcc.Location(id='url', refresh=False),
    html.Div(id='current-path')
])

@app.callback(Output('current-path', 'children'),
              [Input('url', 'pathname')])
def display_current_path(pathname):
    return f"当前路径：{pathname}"

if __name__ == '__main__':
    app.run_server(debug=True)