Datasets:
| import csv | |
| from datetime import datetime | |
| fmt = {"uk_branch": "%d/%m/%Y", "us_branch": "%m/%d/%Y"} | |
| w = csv.writer(open("receipts_iso.csv", "w", newline="")); w.writerow(["receipt", "date"]) | |
| for r in csv.DictReader(open("receipts.csv")): | |
| t = r["date"] | |
| if r["source"] in fmt: d = datetime.strptime(t, fmt[r["source"]]) | |
| else: d = datetime.strptime(t, "%Y-%m-%d" if "-" in t else "%d %b %Y") | |
| w.writerow([r["receipt"], d.date().isoformat()]) | |