Add crypto_price_tracker.py to fetch live crypto prices

web_programming/crypto_price_tracker.py

@@ -0,0 +1,27 @@
+"""
+Fetch the current price of a cryptocurrency in USD using CoinGecko API.
+"""
+
+import httpx
+
+
+def crypto_price(coin: str = "bitcoin") -> float:
+    """
+    Return the current price of a cryptocurrency in USD using CoinGecko API.
+
+    >>> isinstance(crypto_price("bitcoin"), float)
+    True
+    >>> isinstance(crypto_price("ethereum"), float)
+    True
+    """
+    url = f"https://api.coingecko.com/api/v3/simple/price?ids={coin}&vs_currencies=usd"
+    try:
+        response = httpx.get(url, timeout=10)
+        response.raise_for_status()
+        return float(response.json().get(coin, {}).get("usd", 0.0))
+    except (httpx.RequestError, ValueError, KeyError):
+        return 0.0
+
+
+if __name__ == "__main__":
+    print(crypto_price("bitcoin"))