Forked from chriddyp/dash_simple_example_pandas_datareader.py
Created
September 15, 2020 16:45
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import dash | |
from dash.dependencies import Input, Output | |
import dash_core_components as dcc | |
import dash_html_components as html | |
from pandas_datareader import data as web | |
from datetime import datetime as dt | |
app = dash.Dash('Hello World') | |
app.layout = html.Div([ | |
dcc.Dropdown( | |
id='my-dropdown', | |
options=[ | |
{'label': 'Coke', 'value': 'COKE'}, | |
{'label': 'Tesla', 'value': 'TSLA'}, | |
{'label': 'Apple', 'value': 'AAPL'} | |
], | |
value='COKE' | |
), | |
dcc.Graph(id='my-graph') | |
], style={'width': '500'}) | |
@app.callback(Output('my-graph', 'figure'), [Input('my-dropdown', 'value')]) | |
def update_graph(selected_dropdown_value): | |
df = web.DataReader( | |
selected_dropdown_value, | |
'google', | |
dt(2017, 1, 1), | |
dt.now() | |
) | |
return { | |
'data': [{ | |
'x': df.index, | |
'y': df.Close | |
}], | |
'layout': {'margin': {'l': 40, 'r': 0, 't': 20, 'b': 30}} | |
} | |
app.css.append_css({'external_url': 'https://codepen.io/chriddyp/pen/bWLwgP.css'}) | |
if __name__ == '__main__': | |
app.run_server() |
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