Please help me breakdown and understand this code

# Run this app with `python` and
# visit in your web browser.

from dash import Dash, html
import pandas as pd

df = pd.read_csv('')

def generate_table(dataframe, max_rows=10):
    return html.Table([
            html.Tr([html.Th(col) for col in dataframe.columns])
                html.Td(dataframe.iloc[i][col]) for col in dataframe.columns
            ]) for i in range(min(len(dataframe), max_rows))

app = Dash(__name__)

app.layout = html.Div([
    html.H4(children='US Agriculture Exports (2011)'),

if __name__ == '__main__':

I think its the syntax and layout, its extremely confusing, It looks like their is a lot of lists in there. Also what does iloc do? Does this: app = Dash(name) need to be in every file? is this calling from a method? if someone can break this down in simple way that would be great.

Thanks for any help
Total noob here.


to answer your questions:

app = Dash(__name__) initiates the Dash app, usually this is done only once.

Once the app ist initiated, you can add content via the app.layout = 'SOMETHING'

In this case the content of the app is a html table which has been created from a *.csv file unsing pandas. Within pandas, pandas.iloc[] ist just a way of selecting rows and columns.

Here you find basic information about Dash:

This is the pandas.iloc[] help:

Hi, thank you very much for the response. Thats helpful. I have decided to learn plotly as much as i can before moving onto dash. I only knew basics so will spend some time with it first.