app snippet 1

dashapp1.py

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

app = dash.Dash()
app.layout = html.Div([
    html.H1('Please enter the input'),
    dcc.Input(id='my-id', value='initial value', type='text'),
    html.Div(id='my-div')
])


@app.callback(
    Output(component_id='my-div', component_property='children'),
    [Input(component_id='my-id', component_property='value')]
)
def update_output_div(input_value):
    df = pd.read_csv('file.csv')
    return df.iloc[input_value]


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