Script that notifies me when a cubs game is happening

script.py

# This is running on an aws lambda instance with a CloudWatch trigger:
# Trigger is cron(0 17 * * ? *)
# CSV is from https://www.mlb.com/cubs/schedule/downloadable-schedule

import json
from urllib.request import urlopen, Request
from urllib.parse import urlencode
from os import getenv
from csv import DictReader
from datetime import datetime
from pathlib import Path

import boto3

    
def lambda_handler(event, context):
    # TODO have separate code paths for daily (pushover) and on-demand (http response)
    # https://docs.aws.amazon.com/lambda/latest/dg/urls-invocation.html
    today = datetime.today().strftime(r"%m/%d/%y")
    csv = DictReader(Path('./GameTicketPromotionPrice.csv').open())
    for row in csv:
        if row['START DATE'] == today:
            start, end = row['START TIME'], row['END TIME']
            message = f"Cubs Game: {start}-{end}"
            url = "https://api.pushover.net/1/messages.json"
            data = urlencode({'token': getenv('PUSHOVER_API'), 
                'user': getenv('PUSHOVER_USER'), 
                'message': message, 
                'title': "Game warning"})
            data = data.encode('ascii')
            with urlopen(url, data=data) as f:
                pass
    
            return {
                'statusCode': 200,
                'body': json.dumps(f.status)
            }
    return {
            'statusCode': 200,
            'body': "No game detected"
        }