jupyter notebook运行dash

要在Jupyter Notebook中运行Dash，需要执行以下步骤：

1. 确保已安装必要的库：dash和plotly

!pip install dash
!pip install plotly

2. 在Jupyter Notebook中创建Dash应用程序

import dash
import dash_core_components as dcc
import dash_html_components as html

app = dash.Dash(__name__)

app.layout = html.Div(
    children=[
        html.H1(children='Hello Dash'),
        dcc.Graph(
            id='example-graph',
            figure={
                'data': [
                    {'x': [1, 2, 3], 'y': [4, 1, 2], 'type': 'bar', 'name': 'SF'},
                    {'x': [1, 2, 3], 'y': [2, 4, 5], 'type': 'bar', 'name': u'Montréal'},
                ],
                'layout': {
                    'title': 'Dash Data Visualization'
                }
            }
        )
    ]
)

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

3. 运行应用程序

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

4. 在浏览器中打开应用程序

访问http://localhost:8050/，就可以在浏览器中看到运行的Dash应用程序。