vcf2csv.py

## requires a `pip install vobject`
import vobject
import io
import csv

reader = io.open("contacts.vcf", "r", encoding="utf-8")
output_file = open('contacts.csv', mode='w')

writer = csv.writer(output_file, delimiter=',', quotechar='"', quoting=csv.QUOTE_MINIMAL)
writer.writerow(["username", "name.first", "name.last"])

i = 1
for vcard in vobject.readComponents(reader):
    try:
        writer.writerow([vcard.email.value, vcard.n.value.given, vcard.n.value.family])
        print(i, vcard.email.value)
        i = i+1
    except AttributeError:
        pass

reader.close()
output_file.close()