Multi-Value Dropdown | Dash Plotly

Multi-Value Dropdown.py

from dash import Dash, dcc, html, Input, Output

app = Dash()

app.layout = html.Div([
    dcc.Dropdown(
        id='dropdown1'    # Dropdown id
        options=[{'label': 'India', 'value': 'India'},
                 {'label': 'Russia', 'value': 'Russia'},
                 {'label': 'USA', 'value': 'USA'}],     # Data to be shown in dropdown options
        value='India',    # Dropdown Default Value
        multi=True,       # Multi-value Dropdown
    ),
    html.Div(id='output-container')
])


@app.callback(Output('output-container', 'children'),
              Input('dropdown1', 'value'))

def update_output(value):
    return f'You have selected {value}'


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