add docstring

2019-08-25 14:30:09 +02:00 · 2019-08-25 14:30:09 +02:00 · 19f3669fbd
commit 19f3669fbd
parent 06024b0ab0
1 changed files with 10 additions and 7 deletions
--- a/freqtrade/data/history.py
+++ b/freqtrade/data/history.py
@ -334,7 +334,10 @@ def download_trades_history(datadir: Optional[Path],
                            pair: str,
                            ticker_interval: str = '5m',
                            timerange: Optional[TimeRange] = None) -> bool:
-
+    """
+    Download trade history from the exchange.
+    Appends to previously downloaded trades data.
+    """
    if not exchange:
        raise OperationalException(
            "Exchange needs to be initialized to download data")