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add docstring

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