如何在Plotly Dash中设置数据标签

import dash
import dash_core_components as dcc
import dash_html_components as html
import plotly.graph_objs as go

app = dash.Dash(__name__)

data = [
    go.Scatter(
        x=[1, 2, 3, 4, 5],
        y=[10, 15, 13, 17, 12],
        mode='markers',
        name='Data',
        marker=dict(
            size=12,
            color='rgb(51,204,153)',
            symbol='circle',
            line=dict(
                width=2
            )
        )
    )
]

layout = go.Layout(
    title='Data Labels in Plotly Dash',
    xaxis=dict(title='X-axis'),
    yaxis=dict(title='Y-axis'),
    showlegend=True
)

annotations = [
    dict(
        x=1,
        y=10,
        xref='x',
        yref='y',
        text='Data Point 1',
        showarrow=True,
        arrowhead=7,
        ax=0,
        ay=-40
    ),
    dict(
        x=3,
        y=13,
        xref='x',
        yref='y',
        text='Data Point 3',
        showarrow=True,
        arrowhead=7,
        ax=0,
        ay=-40
    ),
    dict(
        x=5,
        y=12,
        xref='x',
        yref='y',
        text='Data Point 5',
        showarrow=True,
        arrowhead=7,
        ax=0,
        ay=-40
    )
]

layout['annotations'] = annotations

fig = go.Figure(data=data, layout=layout)

app.layout = html.Div([
    dcc.Graph(
        id='data-labels',
        figure=fig
    )
])

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