Pie_Chart with dropdown using dash-plotly

Dash Python
1

import pandas as pd

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

df = pd.read_csv(“C:/Users/ganjali001/Documents/DEMO_NEW.csv”)

app = dash.Dash(name)

#---------------------------------------------------------------
app.layout = html.Div([
html.Div([
html.Label([‘Payment Details’]),
dcc.Dropdown(
id=‘my_dropdown’,
options=[
{‘label’: ‘Commercial’, ‘value’: ‘COMMERCIAL’},
{‘label’: ‘Medicare’, ‘value’: ‘MEDICARE’},
{‘label’: ‘Medicaid’, ‘value’: ‘MEDICAID’},
{‘label’: ‘Self Pay’, ‘value’: ‘SELF-PAY’},
{‘label’: ‘Default’, ‘value’: ‘DEFAULT’}
],
value=‘SELF-PAY’,
multi=False,
clearable=False,
style={“width”: “50%”}
),
]),

html.Div([
    dcc.Graph(id='the_graph')
]),

])

#---------------------------------------------------------------
@app.callback(
Output(component_id=‘the_graph’, component_property=‘figure’),
[Input(component_id=‘my_dropdown’, component_property=‘value’)]
)

def update_graph(my_dropdown):
dff = df

piechart = px.pie(
    data_frame=dff,
    values='PaymentAmt',
    names=my_dropdown,
    color='FinancialClass',  # differentiate markers (discrete) by color
   
    title='Payments by Financial Class',  # figure title
    template='presentation',  # 'ggplot2', 'seaborn', 'simple_white', 'plotly',
    
    width=800,  # figure width in pixels
    height=600,  # figure height in pixels
    hole=0,  # represents the hole in middle of pie
)

return (piechart)

if name == ‘main’:
app.run_server(debug=True, port=1200)

2

What error are you getting? At first glance, I’m not sure you need the parentheses around piechart (return (piechart)).