/usr/share/pyshared/chemfp/types.py is in python-chemfp 1.1p1-2.
This file is owned by root:root, with mode 0o644.
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# Information about fingerprint types
from . import argparse
from . import FingerprintIterator, Metadata
from . import io
from .encodings import import_decoder # XXX too specific to the decoder module
def check_openbabel_maccs166():
from .openbabel import HAS_MACCS, MACCS_VERSION
assert HAS_MACCS
if MACCS_VERSION == 1:
return "OpenBabel-MACCS/1"
elif MACCS_VERSION == 2:
return "OpenBabel-MACCS/2"
raise AssertionError
def check_openeye_maccs166():
from .openeye import OEGRAPHSIM_API_VERSION
return "OpenEye-MACCS166/"+OEGRAPHSIM_API_VERSION
def check_openeye_path():
from .openeye import OEGRAPHSIM_API_VERSION
return "OpenEye-Path/"+OEGRAPHSIM_API_VERSION
def check_rdkit_atom_pair():
from .rdkit import ATOM_PAIR_VERSION
if ATOM_PAIR_VERSION is None:
ATOM_PAIR_VERSION = "2" # Nothing is supported; pretend to want v2
return "RDKit-AtomPair/"+ATOM_PAIR_VERSION
def check_rdkit_torsion():
from .rdkit import TORSION_VERSION
return "RDKit-Torsion/"+TORSION_VERSION
### The chemfp fingerprint type API isn't powerful enough
# I have to list all of the possible fingerprint types, even if the
# platform doesn't support that specific type. There's also no support
# for toolkit vendors which do carefully tracks the fingerprint
# version (like OEChem); I should be using their version information
# rather than doing it myself.
_family_config_paths = (
("OpenEye-MACCS166/1", "chemfp.openeye.OpenEyeMACCSFingerprintFamily_v1"),
("OpenEye-Path/1", "chemfp.openeye.OpenEyePathFingerprintFamily_v1"),
("OpenEye-MACCS166/2", "chemfp.openeye.OpenEyeMACCSFingerprintFamily_v2"),
("OpenEye-Path/2", "chemfp.openeye.OpenEyePathFingerprintFamily_v2"),
("OpenEye-Circular/2", "chemfp.openeye.OpenEyeCircularFingerprintFamily_v2"),
("OpenEye-Tree/2", "chemfp.openeye.OpenEyeTreeFingerprintFamily_v2"),
("RDKit-MACCS166/1", "chemfp.rdkit.RDKitMACCSFingerprintFamily_v1"),
("RDKit-Fingerprint/1", "chemfp.rdkit.RDKitFingerprintFamily_v1"),
("RDKit-Morgan/1", "chemfp.rdkit.RDKitMorganFingerprintFamily_v1"),
("RDKit-Torsion/1", "chemfp.rdkit.RDKitTorsionFingerprintFamily_v1"),
("RDKit-Torsion/2", "chemfp.rdkit.RDKitTorsionFingerprintFamily_v2"),
("RDKit-AtomPair/1", "chemfp.rdkit.RDKitAtomPairFingerprintFamily_v1"),
("RDKit-AtomPair/2", "chemfp.rdkit.RDKitAtomPairFingerprintFamily_v2"),
("OpenBabel-FP2/1", "chemfp.openbabel.OpenBabelFP2FingerprintFamily_v1"),
("OpenBabel-FP3/1", "chemfp.openbabel.OpenBabelFP3FingerprintFamily_v1"),
("OpenBabel-FP4/1", "chemfp.openbabel.OpenBabelFP4FingerprintFamily_v1"),
("OpenBabel-MACCS/1", "chemfp.openbabel.OpenBabelMACCSFingerprintFamily_v1"),
("OpenBabel-MACCS/2", "chemfp.openbabel.OpenBabelMACCSFingerprintFamily_v2"),
("Indigo-Similarity/1", "chemfp.indigo.IndigoSimilarityFingerprinter_v1"),
("Indigo-Substructure/1",
"chemfp.indigo.IndigoSubstructureFingerprinter_v1"),
("Indigo-ResonanceSubstructure/1",
"chemfp.indigo.IndigoResonanceSubstructureFingerprinter_v1"),
("Indigo-TautomerSubstructure/1",
"chemfp.indigo.IndigoTautomerSubstructureFingerprinter_v1"),
("Indigo-Full/1", "chemfp.indigo.IndigoFullFingerprinter_v1"),
# In the future this will likely change to use a parameterized class
# which can dynamically load fingerprint definitions
("ChemFP-Substruct-OpenEye/1",
"chemfp.openeye_patterns.SubstructOpenEyeFingerprinter_v1"),
("RDMACCS-OpenEye/1",
"chemfp.openeye_patterns.RDMACCSOpenEyeFingerprinter_v1"),
("ChemFP-Substruct-RDKit/1",
"chemfp.rdkit_patterns.SubstructRDKitFingerprinter_v1"),
("RDMACCS-RDKit/1",
"chemfp.rdkit_patterns.RDMACCSRDKitFingerprinter_v1"),
("ChemFP-Substruct-OpenBabel/1",
"chemfp.openbabel_patterns.SubstructOpenBabelFingerprinter_v1"),
("RDMACCS-OpenBabel/1",
"chemfp.openbabel_patterns.RDMACCSOpenBabelFingerprinter_v1"),
("ChemFP-Substruct-Indigo/1",
"chemfp.indigo_patterns.SubstructIndigoFingerprinter_v1"),
("RDMACCS-Indigo/1",
"chemfp.indigo_patterns.RDMACCSIndigoFingerprinter_v1"),
)
_alternates = {
"OpenBabel-MACCS": check_openbabel_maccs166,
"OpenEye-MACCS166": check_openeye_maccs166,
"OpenEye-Path": check_openeye_path,
"RDKit-AtomPair": check_rdkit_atom_pair,
"RDKit-Torsion": check_rdkit_torsion,
}
def _initialize_families(config_paths):
d = {}
for name, path in config_paths:
# Set both the versioned and non-versioned names
# The paths must be in order from oldest to newest
unversioned_name = name.split("/")[0]
d[unversioned_name] = d[name] = path
return d
# Convert into a dictionary, and include the unversioned named
_family_config_paths = _initialize_families(_family_config_paths)
_loaded_families = {}
# Return the fingerprint family given a name like
# "OpenBabel-FP2" or "RDKit-Morgan/1"
def get_fingerprint_family(name):
try:
return _loaded_families[name]
except KeyError:
pass
# Let's see if we can load it.
# Is there a better name for this?
try:
func = _alternates[name]
except KeyError:
new_name = name
else:
new_name = func()
try:
path = _family_config_paths[new_name]
except KeyError:
raise ValueError("Unknown fingerprint family %r" % (name,))
config = import_decoder(path)
config.validate()
family = FingerprintFamily(config)
_loaded_families[name] = _loaded_families[new_name] = family
return family
class FingerprintFamily(object):
def __init__(self, config):
self.config = config
#name = config.name
#format_string = config.format_string
def __call__(self, **kwargs):
return Fingerprinter(self.config, kwargs)
def make_fingerprinter_from_type(self, type):
terms = type.split()
if not terms:
raise ValueError("Empty fingerprint type (%r)" % (type,))
required_args = self.config.get_args()
kwargs = {}
for term in terms[1:]:
try:
left, right = term.split("=")
except ValueError:
raise ValueError("Term %r in type %r must have one and only one '='" %
(term, type))
if left in kwargs:
raise ValueError("Duplicate name %r in type %r" % (left, type))
try:
decoder = required_args[left].decoder
except KeyError:
raise ValueError("Unknown name %r in type %r" % (left, type))
try:
value = decoder(right)
except ValueError, err:
raise ValueError("Unable to parse %s value %r in type %r" % (
left, right, type))
kwargs[left] = value
# Fill in any missing default
for name, arg in required_args.items():
if name not in kwargs:
kwargs[name] = arg.default
# Let the configuration verify the kwargs
verify_args = self.config.verify_args
if verify_args is not None:
verify_args(kwargs)
return Fingerprinter(self.config, kwargs)
class Fingerprinter(object):
def __init__(self, config, fingerprinter_kwargs):
self.config = config
if isinstance(config.num_bits, int):
self.num_bits = config.num_bits
elif config.num_bits is None:
raise AssertionError(config.name)
else:
self.num_bits = config.num_bits(fingerprinter_kwargs)
self.fingerprinter_kwargs = fingerprinter_kwargs
def __eq__(self, other):
return self.get_type() == other.get_type()
def __ne__(self, other):
return self.get_type() != other.get_type()
def get_type(self):
if self.config.format_string is None:
assert not self.fingerprinter_kwargs, "kwargs but no format string!"
return self.config.name
encoded = self.config.format_string % self._encode_parameters()
return self.config.name + " " + encoded
def _encode_parameters(self):
d = {}
for k, v in self.fingerprinter_kwargs.items():
encoder = self.config.args[k].encoder
if encoder is None:
d[k] = v
else:
d[k] = encoder(v)
return d
def read_structure_fingerprints(self, source, format=None, id_tag=None,
errors="strict", metadata=None):
source_filename = io.get_filename(source)
if source_filename is None:
sources = []
else:
sources = [source_filename]
if metadata is None:
# XXX I don't like how the user who wants to pass in aromaticity
# information needs to create the full Metadata
metadata = Metadata(num_bits=self.num_bits, type=self.get_type(),
software=self.config.software,
sources=sources)
structure_reader = self.config.read_structures(metadata, source, format, id_tag, errors)
fingerprinter = self.config.make_fingerprinter(**self.fingerprinter_kwargs)
def fingerprint_reader(structure_reader, fingerprinter):
for (id, mol) in structure_reader:
yield id, fingerprinter(mol)
reader = fingerprint_reader(structure_reader, fingerprinter)
return FingerprintIterator(Metadata(num_bits = self.num_bits,
sources = sources,
software = self.config.software,
type = self.get_type(),
date = io.utcnow(),
aromaticity = metadata.aromaticity),
reader)
# def describe(self, bitno):
# if not (0 <= bitno < self.num_bits):
# raise KeyError("Bit number %d is out of range" % (bitno,))
#
# bit_description = self.config.bit_description
# if bit_description is None:
# return "(unknown)"
# return bit_description[bitno]
## Some code to figure out what the format strings are inside of a string
class Dummy(object):
def __str__(self):
return ""
def __int__(self):
return 0
class GetArgs(object):
def __init__(self, format_string):
self.format_string = format_string
self.args = []
def __getitem__(self, name):
# O(n**2) but n is small.
if name in self.args:
raise TypeError("Duplicate name %r in format string %r" % (name, self.format_string))
self.args.append(name)
return Dummy()
def _get_arg_names(s):
if not s:
return []
args = GetArgs(s)
s % args
return args.args
class FingerprintArgument(object):
def __init__(self, name, decoder, encoder, kwargs):
self.name = name
self.decoder = decoder
self.encoder = encoder
self.default = kwargs["default"]
self.kwargs = kwargs
# Can't use "first or second" because some of the 'first' arguments
# can be false value like {}.
def OR(first, second):
if first is None:
return second
return first
class FingerprintFamilyConfig(object):
def __init__(self,
name = None,
format_string = None,
software = None,
num_bits = None,
read_structures = None,
make_fingerprinter = None,
verify_args = None,
args = None,
):
self.name = name
self.format_string = format_string
self.software = software
self.num_bits = num_bits
self.read_structures = read_structures
self.make_fingerprinter = make_fingerprinter
if args is None:
args = {}
self.verify_args = verify_args
self.args = args.copy() # This can contain extra args!
self._exact_args = None
def validate(self):
pass
def get_args(self):
args = self._exact_args
if args is None:
result = {}
for name in _get_arg_names(self.format_string):
result[name] = self.args[name]
args = self._exact_args = result
return args
def clone(self, name=None, format_string=None, software=None,
num_bits=None, read_structures=None, make_fingerprinter=None,
verify_args=None, args=None):
return FingerprintFamilyConfig(
name = OR(name, self.name),
format_string = OR(format_string, self.format_string),
software = OR(software, self.software),
num_bits = OR(num_bits, self.num_bits),
read_structures = OR(read_structures, self.read_structures),
make_fingerprinter = OR(make_fingerprinter, self.make_fingerprinter),
verify_args = OR(verify_args, self.verify_args),
args = OR(args, self.args))
def add_argument(self, name, decoder=None, encoder=None, default=None,
action=None, metavar=None, help=None):
#if name in self.args:
# raise AssertionError("Argument %r already added" % (name,))
if default is not None:
if help is not None:
help = "%s (default=%s)" % (help, default)
def parse_argument(s):
try:
return decoder(s)
except ValueError, err:
raise argparse.ArgumentError(None, "%s %s" % (name, err))
arg = FingerprintArgument(name, decoder, encoder,
kwargs = dict(type=parse_argument,
default=default,
action=action,
metavar=metavar,
help=help))
self.args[name] = arg
def remove_argument(self, name):
del self.args[name]
def add_argument_to_argparse(self, name, parser):
info = self.args[name]
parser.add_argument("--" + info.name, **info.kwargs)
# Helper functions
def positive_int(s):
# Don't do int(s) because that allows "+3" and " 3 ", which I don't want
if not s.isdigit():
raise ValueError("must be 1 or greater")
i = int(s)
if i == 0:
raise ValueError("must be 1 or greater")
return i
def nonnegative_int(s):
if not s.isdigit():
raise ValueError("must be 0 or greater")
return int(s)
def zero_or_one(s):
if s == "0":
return 0
if s == "1":
return 1
raise ValueError("must be 0 or a 1")
def parse_type(type):
terms = type.split()
if not terms:
raise ValueError("Empty fingerprint type (%r)" % (type,))
name = terms[0]
family = get_fingerprint_family(name)
return family.make_fingerprinter_from_type(type)
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