Update crypto_price_tracker to use httpx2

Author: cclauss

web_programming/crypto_price_tracker.py

@@ -2,7 +2,14 @@
 Fetch the current price of a cryptocurrency in USD using CoinGecko API.
 """
 
-import httpx
+# /// script
+# requires-python = ">=3.11"
+# dependencies = [
+#     "httpx2",
+# ]
+# ///
+
+import httpx2
 
 
 def crypto_price(coin: str = "bitcoin") -> float:
@@ -16,12 +23,12 @@ def crypto_price(coin: str = "bitcoin") -> float:
     """
     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()
+        json_response = httpx2.get(url, timeout=10).raise_for_status().json()
         return float(response.json().get(coin, {}).get("usd", 0.0))
-    except (httpx.RequestError, ValueError, KeyError):
+    except (httpx2.RequestError, ValueError, KeyError):
         return 0.0
+    return float(json_response.get(coin, {}).get("usd", 0.0))
 
 
 if __name__ == "__main__":
-    print(crypto_price("bitcoin"))
+    print(f"{crypto_price('bitcoin') = }")