Simple Python script to show BTC to EUR/USD as Alfred workflow result

btcconf.py

#!/usr/local/bin/python3
import sys
from urllib.request import urlopen
import json
from decimal import Decimal
import locale

def format_eur(eur):
    locale.setlocale(locale.LC_ALL, "de_DE.UTF-8")
    return locale.currency(eur, grouping=True, international=True)

def format_usd(usd):
    locale.setlocale(locale.LC_ALL, "en_US.UTF-8")
    return locale.currency(usd, grouping=True, international=True)


query = sys.argv[1].replace("BTC", "").replace(",", ".").strip()
btc = Decimal(query)

eur_rate = None
usd_rate = None

with urlopen("https://api.coinmarketcap.com/v1/ticker/bitcoin/?convert=EUR") as f:
    data = json.load(f)
    eur_rate = Decimal(data[0]["price_eur"])
    usd_rate = Decimal(data[0]["price_usd"])

btc_in_eur = btc * eur_rate
btc_in_usd = btc * usd_rate

output = {
    "items": [
        {
            "title": format_eur(btc_in_eur) + " = " + f"BTC {btc:f}",
            "subtitle": "Exchange rate: " + format_eur(eur_rate),
        },
        {
            "title": format_usd(btc_in_usd) + " = " + f"BTC {btc:f}",
            "subtitle": "Exchange rate: " + format_usd(usd_rate),
        },
    ]
}

sys.stdout.write(json.dumps(output))

Simple, yet effective.