Add crypto_price_tracker.py to fetch live crypto prices (#13797)

* Add crypto_price_tracker.py to fetch live crypto prices

* Update crypto_price_tracker to use httpx2

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* updating DIRECTORY.md

* Correct JSON response handling in price tracker

Fix incorrect variable reference for JSON response.

---------

Co-authored-by: Christian Clauss <cclauss@me.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: cclauss <cclauss@users.noreply.github.com>

Author: 3 people

DIRECTORY.md

@@ -219,9 +219,11 @@
   * [Excel Title To Column](conversions/excel_title_to_column.py)
   * [Hex To Bin](conversions/hex_to_bin.py)
   * [Hexadecimal To Decimal](conversions/hexadecimal_to_decimal.py)
+  * [Int To Negative Binary Base](conversions/int_to_negative_binary_base.py)
   * [Ipv4 Conversion](conversions/ipv4_conversion.py)
   * [Length Conversion](conversions/length_conversion.py)
   * [Molecular Chemistry](conversions/molecular_chemistry.py)
+  * [Negative Binary Base To Int](conversions/negative_binary_base_to_int.py)
   * [Octal To Binary](conversions/octal_to_binary.py)
   * [Octal To Decimal](conversions/octal_to_decimal.py)
   * [Octal To Hexadecimal](conversions/octal_to_hexadecimal.py)
@@ -1570,6 +1572,8 @@
   * [Covid Stats Via Xpath](web_programming/covid_stats_via_xpath.py)
   * [Crawl Google Results](web_programming/crawl_google_results.py)
   * [Crawl Google Scholar Citation](web_programming/crawl_google_scholar_citation.py)
+  * [Crypto Price](web_programming/crypto_price.py)
+  * [Crypto Price Tracker](web_programming/crypto_price_tracker.py)
   * [Currency Converter](web_programming/currency_converter.py)
   * [Current Stock Price](web_programming/current_stock_price.py)
   * [Current Weather](web_programming/current_weather.py)

web_programming/crypto_price_tracker.py

@@ -0,0 +1,33 @@
+"""
+Fetch the current price of a cryptocurrency in USD using CoinGecko API.
+"""
+
+# /// script
+# requires-python = ">=3.11"
+# dependencies = [
+#     "httpx2",
+# ]
+# ///
+
+import httpx2
+
+
+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:
+        json_response = httpx2.get(url, timeout=10).raise_for_status().json()
+    except httpx2.RequestError, ValueError, KeyError:
+        return 0.0
+    return float(json_response.get(coin, {}).get("usd", 0.0))
+
+
+if __name__ == "__main__":
+    print(f"{crypto_price('bitcoin') = }")