add basic crypto price converter in accordance with #13008

Author: sanskarmodi8

web_programming/crypto_price.py

@@ -0,0 +1,30 @@
+"""
+Convert ETH to USD using real-time price data from CoinGecko.
+"""
+
+# /// script
+# requires-python = ">=3.10"
+# dependencies = [
+#     "httpx",
+# ]
+# ///
+
+import httpx
+
+COINGECKO_URL = "https://api.coingecko.com/api/v3/simple/price?ids=ethereum&vs_currencies=usd"
+
+def get_eth_price_usd() -> float:
+    """Fetch the current ETH price in USD."""
+    response = httpx.get(COINGECKO_URL, timeout=10)
+    response.raise_for_status()
+    data = response.json()
+    return data["ethereum"]["usd"]
+
+def eth_to_usd(eth_amount: float) -> float:
+    """Convert ETH amount to USD."""
+    return eth_amount * get_eth_price_usd()
+
+if __name__ == "__main__":
+    eth_amount = float(input("Enter ETH amount: "))
+    usd_value = eth_to_usd(eth_amount)
+    print(f"{eth_amount} ETH = ${usd_value:.2f} USD")