def _resolve_pairs_list(self, config: Dict[str, Any]) -> None:
"""
Helper for download script.
Takes first found:
* -p (pairs argument)
* --pairs-file
* whitelist from config
"""
if "pairs" in config:
config['exchange']['pair_whitelist'] = config['pairs']
return
if "pairs_file" in self.args and self.args["pairs_file"]:
pairs_file = Path(self.args["pairs_file"])
logger.info(f'Reading pairs file "{pairs_file}".')
# Download pairs from the pairs file if no config is specified
# or if pairs file is specified explicitly
if not pairs_file.exists():
raise OperationalException(
f'No pairs file found with path "{pairs_file}".')
config['pairs'] = load_file(pairs_file)
config['pairs'].sort()
return
if 'config' in self.args and self.args['config']:
logger.info("Using pairlist from configuration.")
config['pairs'] = config.get('exchange', {}).get('pair_whitelist')
else:
# Fall back to /dl_path/pairs.json
pairs_file = config['datadir'] / 'pairs.json'
if pairs_file.exists():
config['pairs'] = load_file(pairs_file)
if 'pairs' in config:
config['pairs'].sort()
def test_load_file_error(tmpdir):
testpath = Path(tmpdir) / 'config.json'
with pytest.raises(OperationalException, match=r"File .* not found!"):
load_file(testpath)