如何在dash核心组件中存储变量

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

app = dash.Dash(__name__)

app.layout = html.Div([
    dcc.Input(id='input', type='text'),
    html.Div(id='output')
])

@app.callback(
    Output('output', 'children'),
    [Input('input', 'value')]
)
def update_output(value):
    # 在这里可以对变量进行处理或存储
    # 例如，可以将变量存储在全局变量中
    global stored_variable
    stored_variable = value
    
    return value

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

import dash
import dash_core_components as dcc
import dash_html_components as html

app = dash.Dash(__name__)

app.layout = html.Div([
    dcc.Input(id='input', type='text'),
    html.Div(id='output')
])

stored_variable = None

@app.callback(
    Output('output', 'children'),
    [Input('input', 'value')]
)
def update_output(value):
    # 在这里可以对变量进行处理或存储
    # 例如，可以将变量存储在全局变量中
    global stored_variable
    stored_variable = value
    
    return value

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