Update app.py

app.py

@@ -21,7 +21,11 @@ def get_btc_price() -> str:
 
 @tool
 def get_btc_historical_prices(days: int = 30) -> str:
-    """Fetches historical Bitcoin prices in USD using the CoinGecko API."""
+    """Fetches historical Bitcoin prices in USD using the CoinGecko API.
+
+    Args:
+        days (int): Number of days to fetch historical prices for.
+    """
     url = f"https://api.coingecko.com/api/v3/coins/bitcoin/market_chart?vs_currency=usd&days={days}&interval=daily"
     response = requests.get(url)
     if response.status_code != 200:
@@ -34,14 +38,22 @@ def get_btc_historical_prices(days: int = 30) -> str:
 
 @tool
 def analyze_sentiment(text: str) -> str:
-    """Analyzes the sentiment of a given text."""
+    """Analyzes the sentiment of a given text.
+
+    Args:
+        text (str): The text to analyze.
+    """
     sentiment_pipeline = pipeline("sentiment-analysis")
     result = sentiment_pipeline(text)
     return f"Sentiment: {result[0]['label']}, Score: {result[0]['score']:.2f}"
 
 @tool
 def calculate_technical_indicators(data_json: str) -> str:
-    """Calculates technical indicators from historical price data."""
+    """Calculates technical indicators from historical price data.
+
+    Args:
+        data_json (str): JSON string containing historical price data.
+    """
     df = pd.read_json(data_json)
     df.set_index('timestamp', inplace=True)
     df['SMA_10'] = ta.trend.sma_indicator(df['price'], window=10)