P13.5 Python Project 5: Multi-Currency Sales Report JSON मध्ये Save करा

उदाहरण A: Convert, total आणि save

हा code चालवा:

import json
rates_to_usd = {"USD": 1.0, "GBP": 1.27, "EUR": 1.08, "INR": 0.012}
sales = [
    ("USA", 12000, "USD"), ("UK", 8000, "GBP"),
    ("Germany", 9500, "EUR"), ("India", 650000, "INR"), ("UK", 1500, "GBP"),
]
def to_usd(amount, cur):
    if cur not in rates_to_usd:
        raise ValueError(f"Unknown currency {cur}")
    return amount * rates_to_usd[cur]
by_country = {}
for country, amt, cur in sales:
    by_country[country] = round(by_country.get(country, 0) + to_usd(amt, cur), 2)
report = {"currency": "USD", "total": round(sum(by_country.values()), 2), "by_country": by_country}
with open("report.json", "w", encoding="utf-8") as f:
    json.dump(report, f, indent=2)
print(open("report.json", encoding="utf-8").read())

तुम्हाला दिसणारा output:

{
  "currency": "USD",
  "total": 42125.0,
  "by_country": {
    "USA": 12000.0,
    "UK": 12065.0,
    "Germany": 10260.0,
    "India": 7800.0
  }
}

याचा अर्थ: Report JSON मध्ये save झाला आणि परत वाचता आला.