How to Convert ICS Calendar Files into CSV or Excel Format without Losing Original Data?

import os
import csv
from icalendar import Calendar

with open('combined_output.csv', 'w', newline='', encoding='utf-8') as f:
    writer = csv.writer(f)
    writer.writerow(['Subject', 'Start Date', 'End Date', 'Description'])
    
    for file in os.listdir('.'):
        if file.endswith('.ics'):
            with open(file, 'rb') as g:
                g_cal = Calendar.from_ical(g.read())
                for component in g_cal.walk():
                    if component.name == "VEVENT":
                        writer.writerow([
                            component.get('summary'),
                            component.get('dtstart').dt if component.get('dtstart') else '',
                            component.get('dtend').dt if component.get('dtend') else '',
                            component.get('description')
                        ])