def parse(self, value, config):
'''
Set symbols based on config values, using defaults if unset
'''
symbols = {
'match': '+',
'mismatch': '-',
'unknown': '?',
'unsequenced': 'n',
'gap': '-',
'unaligned': '?',
'masked': 'x'
}
config_symbols = get_nested(config, 'HMM_symbols')
if config_symbols is not None:
for k, v in config_symbols.items():
if k not in symbols:
log.warning("Unused symbol in configuration: "
f"{k} -> '{v}'")
else:
symbols[k] = v
log.debug(f"Overwriting default symbol for {k} with '{v}'")
for k, v in symbols.items():
if k not in config_symbols:
log.warning(f'Symbol for {k} unset in config, '
f"using default '{v}'")
else:
for k, v in symbols.items():
log.warning(f'Symbol for {k} unset in config, '
f"using default '{v}'")
return symbols
def find_strains(self, test_strains: List[str] = None):
'''
Helper method to get strains supplied in config, or from test_strains
'''
strains = get_nested(self.config, 'strains')
self.test_strains = test_strains
if strains is None:
if test_strains is None:
err = ('Unable to find strains in config and '
'no test_strains provided')
log.exception(err)
raise ValueError(err)
# try to build strains from wildcards in test_strains
strains = {}
for test_strain in test_strains:
# find matching files
strain_glob = test_strain.format(strain='*', chrom='*')
log.info(f'searching for {strain_glob}')
for fname in glob.iglob(strain_glob):
# extract wildcard matches
match = re.match(
test_strain.format(strain='(?P<strain>.*?)',
chrom='(?P<chrom>[^_]*?)'), fname)
if match:
log.debug(
f'matched with {match.group("strain", "chrom")}')
strain, chrom = match.group('strain', 'chrom')
if strain not in strains:
strains[strain] = set()
strains[strain].add(chrom)
if len(strains) == 0:
err = ('Found no chromosome sequence files '
f'in {test_strains}')
log.exception(err)
raise ValueError(err)
# check if requested chromosomes are within the list of chroms
chrom_set = set(self.chromosomes)
for strain, chroms in strains.items():
if not chrom_set.issubset(chroms):
not_found = chrom_set.difference(chroms).pop()
err = (f'Strain {strain} is missing chromosomes. '
f'Unable to find chromosome \'{not_found}\'')
log.exception(err)
raise ValueError(err)
self.strains = list(sorted(strains.keys()))
else: # strains set in config
self.strains = list(sorted(set(strains)))
def get_interval_states(self) -> List:
'''
Build list of interval states, typically just known names
but if the state has an interval name, use that
'''
ref = get_nested(self.config, 'analysis_params.reference')
# set with name or empty list
if ref is None:
ref = []
else:
ref = [ref]
known = get_nested(self.config, 'analysis_params.known_states')
if known is None:
known = []
return [
s['interval_name'] if 'interval_name' in s else s['name']
for s in ref + known
]
def test_get_nested():
assert get_nested({'a': 1}, 'a') == 1
assert get_nested({'a': 1}, 'b') is None
assert get_nested({'a': {'b': 2}}, 'a.b') == 2
assert get_nested({'a': {'b': 2}}, 'a.c') is None
assert get_nested({'a': {'b': {'c': 3}}}, 'a.b.c') == 3
assert get_nested(None, 'key') is None
def parse(self, value, config={}):
if self.nullable:
if not value:
value = get_nested(config, self.config_path)
else:
value = validate(config, self.config_path,
f'No {self.name} provided', value)
if self.wildcards:
check_wildcards(value, self.wildcards)
return value
def get_states(self) -> Tuple[List, List]:
'''
Build lists of known and unknown states from the analysis params
'''
ref = get_nested(self.config, 'analysis_params.reference.name')
if ref is None:
ref = []
else:
ref = [ref]
known = get_nested(self.config, 'analysis_params.known_states')
if known is None:
known = []
known_states = ref + [s['name'] for s in known]
unknown = get_nested(self.config, 'analysis_params.unknown_states')
if unknown is None:
unknown = []
unknown_states = [s['name'] for s in unknown]
return known_states, unknown_states
def _set_strains(self, test_strains: str = ''):
'''
build the strains to perform prediction on
'''
if not test_strains:
test_strains = get_nested(self.config, 'paths.test_strains')
else:
# need to support list for test strains
test_strains = [test_strains]
if test_strains is not None:
for test_strain in test_strains:
check_wildcards(test_strain, 'strain,chrom')
self.find_strains(test_strains)
def get(self, key: str):
'''
Get nested key from underlying dictionary. Returning none if any
key is not in dict
'''
return get_nested(self.config, key)
