Basic Flask app before adding templates

pres_video2.py

from flask import Flask
app = Flask(__name__)

import csv

def convert_to_dict(filename):
    datafile = open(filename, newline='')
    my_reader = csv.DictReader(datafile)
    list_of_dicts = list(my_reader)
    datafile.close()
    return list_of_dicts

# you will need to get the CSV elsewhere
pres_list = convert_to_dict('presidents.csv')

@app.route('/')
def index():
    link1 = '<p><a href="president/1">George Washington</a></p>'
    link2 = '<p><a href="president/2">John Adams</a></p>'
    link3 = '<p><a href="president/3">Thomas Jefferson</a></p>'
    return link1 + link2 + link3

@app.route('/president/<num>')
def president(num):
    pres = f'<h1>Hello, {num}!</h1>'
    return pres_list[int(num) - 1 ]

if __name__ == '__main__':
    app.run(debug=True)

You can get the CSV here:
https://github.com/macloo/python-adv-web-apps/blob/master/python_code_examples/flask/presidents/presidents.csv

This file represents the end result of this video:
https://www.youtube.com/watch?v=832svAqCOEU

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