style: normalise blank lines between definitions

- two between top-level definitions, one between methods, none doubled inside a body

tradingagents/dataflows/router.py

@@ -156,6 +156,7 @@ VENDOR_METHODS = {
     },
 }
 
+
 def get_category_for_method(method: str) -> str:
     """Get the category that contains the specified method."""
     for category, info in TOOLS_CATEGORIES.items():
@@ -163,6 +164,7 @@ def get_category_for_method(method: str) -> str:
             return category
     raise ValueError(f"Method '{method}' not found in any category")
 
+
 def get_vendor(category: str, method: str = None) -> str:
     """Get the configured vendor for a data category or specific tool method.
     Tool-level configuration takes precedence over category-level.
@@ -178,6 +180,7 @@ def get_vendor(category: str, method: str = None) -> str:
     # Fall back to category-level configuration
     return config.get("data_vendors", {}).get(category, "default")
 
+
 def route_to_vendor(method: str, *args, **kwargs):
     """Route method calls to appropriate vendor implementation with fallback support."""
     category = get_category_for_method(method)

tradingagents/dataflows/vendors/alpha_vantage/common.py

@@ -34,6 +34,7 @@ def get_api_key() -> str:
         )
     return api_key
 
+
 def format_datetime_for_api(date_input, end_of_day: bool = False) -> str:
     """Convert various date formats to the YYYYMMDDTHHMM Alpha Vantage expects.
 
@@ -60,10 +61,12 @@ def format_datetime_for_api(date_input, end_of_day: bool = False) -> str:
     else:
         raise ValueError(f"Date must be string or datetime object, got {type(date_input)}")
 
+
 class AlphaVantageRateLimitError(VendorRateLimitError):
     """Raised when the Alpha Vantage API rate limit is exceeded."""
     pass
 
+
 def _make_api_request(function_name: str, params: dict) -> dict | str:
     """Helper function to make API requests and handle responses.
 
@@ -119,7 +122,6 @@ def _make_api_request(function_name: str, params: dict) -> dict | str:
     return response_text
 
 
-
 def _filter_csv_by_date_range(csv_data: str, start_date: str, end_date: str) -> str:
     """
     Filter CSV data to include only rows within the specified date range.

tradingagents/dataflows/vendors/alpha_vantage/news.py

@@ -32,6 +32,7 @@ def get_news(ticker, start_date, end_date) -> dict[str, str] | str:
 
     return _make_api_request("NEWS_SENTIMENT", params)
 
+
 def get_global_news(curr_date, look_back_days: int | None = None, limit: int | None = None) -> dict[str, str] | str:
     """Returns global market news & sentiment data without ticker-specific filtering.
 

tradingagents/dataflows/vendors/reddit.py

@@ -64,6 +64,7 @@ def _coverage_dates(posts) -> list:
         dates.append(datetime.now(timezone.utc) - _SEARCH_LOOKBACK)
     return dates
 
+
 _RSS = "https://www.reddit.com/r/{sub}/search.rss?{qs}"
 # A descriptive, identified User-Agent (per Reddit's API etiquette). Reddit
 # blocks generic/anonymous tokens like bare "Mozilla/5.0" or "curl/…" but

tradingagents/dataflows/vendors/yahoo/market.py

@@ -69,6 +69,7 @@ def get_YFin_data_online(
 
     return header + csv_string
 
+
 def get_stock_stats_indicators_window(
     symbol: Annotated[str, "ticker symbol of the company"],
     indicator: Annotated[str, "technical indicator to get the analysis and report of"],
@@ -269,7 +270,6 @@ def get_stockstats_indicator(
     return str(indicator_value)
 
 
-
 def get_closes(symbol: str, start_date: str, end_date: str) -> pd.Series:
     """Daily closes from ``start_date`` up to, not including, ``end_date``."""
     canonical = normalize_symbol(symbol)