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from pathlib import Path

import pandas as pd

from dash import Dash, html, dcc

import plotly.express as px

app = Dash(__name__)

src_file = Path.cwd() / "data" / "raw" / "EPA_fuel_economy_summary.csv"

df = pd.read_csv(src_file)

fig = px.histogram(

df,

x="fuelCost08",

color="class_summary",

labels={"fuelCost08": "Annual Fuel Cost"},

nbins=40,

title="Fuel Cost Distribution",

)

app.layout = html.Div(children=[

html.H1("Simple Histogram"),

html.Div("Annual Fuel Cost Plot."),

dcc.Graph(id="example-histogram", figure=fig),

])

if __name__ == "__main__":

app.run_server(debug=True)