db3d96999e
- frankfurter.app now redirects to frankfurter.dev/v1/ and blocks the default Python urllib UA with 403. Hit the new endpoint directly and send a named User-Agent. - Extend .gitignore to block common service-account and credential file patterns (asset/, *-sa.json, *-service-account*.json, *credentials*.json, *-key.json) so keys can't be committed by accident. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
48 lines
1.3 KiB
Python
Executable File
48 lines
1.3 KiB
Python
Executable File
#!/usr/bin/env python3
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"""
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fx_convert.py <amount> <currency> [--date yyyy-mm-dd]
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Convert a given amount in <currency> to HKD.
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Prints one tab-separated line: <hkd_amount>\t<fx_rate>\t<fx_date>
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Non-zero exit on failure.
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Uses frankfurter.app by default: free, no API key, ECB reference rates,
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historical dates supported via /{date} path.
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"""
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from __future__ import annotations
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import argparse
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import json
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import sys
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import urllib.request
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from datetime import date
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def fetch_rate(currency: str, on_date: str) -> tuple[float, str]:
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currency = currency.upper()
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if currency == "HKD":
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return 1.0, on_date
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url = f"https://api.frankfurter.dev/v1/{on_date}?from={currency}&to=HKD"
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req = urllib.request.Request(url, headers={"User-Agent": "AutoACCT/1.0"})
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with urllib.request.urlopen(req, timeout=10) as resp:
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data = json.loads(resp.read())
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rate = data["rates"]["HKD"]
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return float(rate), data["date"]
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def main() -> int:
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ap = argparse.ArgumentParser()
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ap.add_argument("amount", type=float)
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ap.add_argument("currency")
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ap.add_argument("--date", default=date.today().isoformat())
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args = ap.parse_args()
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rate, fx_date = fetch_rate(args.currency, args.date)
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hkd = round(args.amount * rate, 2)
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print(f"{hkd}\t{rate}\t{fx_date}")
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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