Plotly Express中使用dcc.DatePickerRange的多输入回调

import dash
import dash_core_components as dcc
import dash_html_components as html
from dash.dependencies import Input, Output
import plotly.express as px

app = dash.Dash(__name__)

app.layout = html.Div([
    dcc.DatePickerRange(
        id='date-picker-range',
        start_date_placeholder_text='开始日期',
        end_date_placeholder_text='结束日期',
        calendar_orientation='vertical'
    ),
    dcc.Graph(id='graph')
])

@app.callback(
    Output('graph', 'figure'),
    [Input('date-picker-range', 'start_date'),
     Input('date-picker-range', 'end_date')]
)
def update_graph(start_date, end_date):
    # 根据选择的日期范围更新图表数据
    # 这里可以根据具体需求进行数据处理和图表生成
    # 返回一个Plotly图表对象
    return px.line(df, x='date', y='value')

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