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allow reloading single pair

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This commit is contained in:
Matthias
2018-12-16 10:17:11 +01:00
parent ebb80b6906
commit 043cefd60a
3 changed files with 42 additions and 24 deletions
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36
freqtrade/data/history.py
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@@ -99,12 +99,28 @@ def load_tickerdata_file(
def load_pair_history(pair: str,
ticker_interval: str,
datadir: Optional[Path],
timerange: TimeRange = TimeRange(None, None, 0, 0)) -> DataFrame:
timerange: TimeRange = TimeRange(None, None, 0, 0),
refresh_pairs: bool = False,
exchange: Optional[Exchange] = None,
) -> DataFrame:
"""
Loads cached ticker history for the given pair.
"""
pairdata = load_tickerdata_file(datadir, pair, ticker_interval, timerange=timerange)
# If the user force the refresh of pairs
if refresh_pairs:
if not exchange:
raise OperationalException("Exchange needs to be initialized when "
"calling load_data with refresh_pairs=True")
logger.info('Download data for all pairs and store them in %s', datadir)
download_backtesting_testdata(datadir=datadir,
exchange=exchange,
pair=pair,
tick_interval=ticker_interval,
timerange=timerange)
if pairdata:
if timerange.starttype == 'date' and pairdata[0][0] > timerange.startts * 1000:
logger.warning('Missing data at start for pair %s, data starts at %s',
@@ -124,26 +140,20 @@ def load_pair_history(pair: str,
def load_data(datadir: Optional[Path],
ticker_interval: str,
pairs: List[str],
refresh_pairs: Optional[bool] = False,
refresh_pairs: bool = False,
exchange: Optional[Exchange] = None,
timerange: TimeRange = TimeRange(None, None, 0, 0)) -> Dict[str, DataFrame]:
"""
Loads ticker history data for the given parameters
Loads ticker history data for a list of pairs the given parameters
:return: dict
"""
result = {}
# If the user force the refresh of pairs
if refresh_pairs:
logger.info('Download data for all pairs and store them in %s', datadir)
if not exchange:
raise OperationalException("Exchange needs to be initialized when "
"calling load_data with refresh_pairs=True")
download_pairs(datadir, exchange, pairs, ticker_interval, timerange=timerange)
for pair in pairs:
hist = load_pair_history(pair=pair, ticker_interval=ticker_interval,
datadir=datadir, timerange=timerange)
datadir=datadir, timerange=timerange,
refresh_pairs=refresh_pairs,
exchange=exchange)
if hist is not None:
result[pair] = hist
return result
@@ -160,7 +170,7 @@ def download_pairs(datadir, exchange: Exchange, pairs: List[str],
"""For each pairs passed in parameters, download the ticker intervals"""
for pair in pairs:
try:
download_backtesting_testdata(datadir,
download_backtesting_testdata(datadir=datadir,
exchange=exchange,
pair=pair,
tick_interval=ticker_interval,