Filter Out Emails of People Who RSVPed Yes (Aisle Planner)

parse.py

import csv

# File paths (change these if needed)
parties_file = 'parties.csv'
guests_file = 'guests.csv'
output_file = 'yes_rsvp_emails.txt'

# Step 1: Collect RSVP IDs for guests who RSVPed yes
yes_rsvp_ids = set()

with open(guests_file, newline='', encoding='utf-8') as gfile:
    reader = csv.DictReader(gfile)
    for row in reader:
        if row['Response'].strip().lower() == 'attending':
            yes_rsvp_ids.add(row['RSVP ID'])

# Step 2: Collect emails from parties.csv for matching RSVP IDs
emails = set()

with open(parties_file, newline='', encoding='utf-8') as pfile:
    reader = csv.DictReader(pfile)
    for row in reader:
        if row['RSVP ID'] in yes_rsvp_ids:
            email = row['Email'].strip()
            if email:
                emails.add(email)

# Print results
for email in sorted(emails):
    print(email + ",")

# Step 3: Write to output file
with open(output_file, 'w', encoding='utf-8') as outfile:
    for email in sorted(emails):
        outfile.write(email + ',\n')

print(f"Saved {len(emails)} email(s) to '{output_file}'.")