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from __future__ import annotations |
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import abc |
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import dataclasses |
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import enum |
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import logging |
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import typing |
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from dataclasses import dataclass |
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from typing import Generic, Optional, Sequence, TypeVar |
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from urllib3.exceptions import HTTPError |
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from requests.exceptions import RequestException |
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from pocketutils.core.dot_dict import NestedDotDict |
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from mandos import MandosUtils, QueryType |
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from mandos.chembl_api import ChemblApi |
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from mandos.model.settings import Settings |
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from mandos.model.taxonomy import Taxonomy |
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logger = logging.getLogger("mandos") |
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class CompoundNotFoundError(ValueError): |
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"""""" |
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class MolStructureType(enum.Enum): |
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mol = enum.auto() |
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both = enum.auto() |
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none = enum.auto() |
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@classmethod |
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def of(cls, s: str) -> MolStructureType: |
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return MolStructureType[s.lower()] |
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@dataclass(frozen=True, order=True, repr=True) |
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class ChemblCompound: |
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"""""" |
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chid: str |
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inchikey: str |
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name: str |
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@dataclass(frozen=True, order=True, repr=True) |
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class AbstractHit: |
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"""""" |
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record_id: Optional[str] |
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compound_id: str |
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inchikey: str |
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compound_lookup: str |
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compound_name: str |
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object_id: str |
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object_name: str |
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def to_triple(self) -> Triple: |
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return Triple( |
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compound_lookup=self.compound_lookup, |
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compound_id=self.compound_id, |
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compound_name=self.compound_name, |
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predicate=self.predicate, |
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object_id=self.object_id, |
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object_name=self.object_name, |
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) |
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@property |
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def predicate(self) -> str: |
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""" |
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Returns: |
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""" |
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raise NotImplementedError() |
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def __hash__(self): |
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return hash(self.record_id) |
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@classmethod |
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def fields(cls) -> Sequence[str]: |
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""" |
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Returns: |
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""" |
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return [f.name for f in dataclasses.fields(cls)] |
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H = TypeVar("H", bound=AbstractHit, covariant=True) |
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class Search(Generic[H], metaclass=abc.ABCMeta): |
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""" |
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Something to search and how to do it. |
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""" |
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def __init__(self, chembl_api: ChemblApi, config: Settings, tax: Taxonomy): |
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""" |
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Constructor. |
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Args: |
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chembl_api: |
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tax: |
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""" |
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self.api = chembl_api |
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self.config = config |
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self.tax = tax |
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@property |
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def search_name(self) -> str: |
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return self.__class__.__name__.lower().replace("search", "") |
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def find_all(self, compounds: Sequence[str]) -> Sequence[H]: |
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""" |
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Loops over every compound and calls ``find``. |
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Just comes with better logging. |
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Args: |
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compounds: |
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Returns: |
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""" |
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lst = [] |
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for i, compound in enumerate(compounds): |
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try: |
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x = self.find(compound) |
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except CompoundNotFoundError: |
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logger.error(f"Failed to find compound {compound}. Skipping.") |
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continue |
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lst.extend(x) |
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logger.debug(f"Found {len(x)} {self.search_name} annotations for {compound}") |
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if i > 0 and i % 20 == 0 or i == len(compounds) - 1: |
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logger.info( |
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f"Found {len(lst)} {self.search_name} annotations for {i} of {len(compounds)} compounds" |
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) |
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return lst |
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def find(self, compound: str) -> Sequence[H]: |
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""" |
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To override. |
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Args: |
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compound: |
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Returns: |
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Something |
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Raises: |
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CompoundNotFoundError |
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""" |
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raise NotImplementedError() |
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@classmethod |
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def hit_fields(cls) -> Sequence[str]: |
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""" |
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Gets the fields in the Hit type parameter. |
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Returns: |
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""" |
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# Okay, there's a lot of magic going on here |
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# We need to access the _parameter_ H on cls -- raw `H` doesn't work |
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# get_args and __orig_bases__ do this for us |
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# then dataclasses.fields gives us the dataclass fields |
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# there's also actual_h.__annotations__, but that doesn't include ClassVar and InitVar |
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# (not that we're using those) |
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# If this magic is too magical, we can make this an abstract method |
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# But that would be a lot of excess code and it might be less modular |
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actual_h = typing.get_args(cls.get_h())[0] |
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return [f.name for f in dataclasses.fields(actual_h)] |
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@classmethod |
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def get_h(cls): |
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""" |
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What is my hit type? |
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Returns: |
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""" |
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# noinspection PyUnresolvedReferences |
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return cls.__orig_bases__[0] |
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def get_target(self, chembl: str) -> NestedDotDict: |
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""" |
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Queries for the target. |
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Args: |
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chembl: |
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Returns: |
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""" |
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targets = self.api.target.filter(target_chembl_id=chembl) |
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assert len(targets) == 1 |
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return NestedDotDict(targets[0]) |
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def get_compound(self, inchikey: str) -> ChemblCompound: |
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""" |
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Calls ``get_compound_dot_dict`` and then ``compound_dot_dict_to_obj``. |
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Args: |
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inchikey: |
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Returns: |
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""" |
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ch = self.get_compound_dot_dict(inchikey) |
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return self.compound_dot_dict_to_obj(ch) |
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def compound_dot_dict_to_obj(self, ch: NestedDotDict) -> ChemblCompound: |
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""" |
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Turn results from ``get_compound_dot_dict`` into a ``ChemblCompound``. |
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Args: |
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ch: |
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Returns: |
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""" |
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chid = ch["molecule_chembl_id"] |
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mol_type = MolStructureType.of(ch["structure_type"]) |
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if mol_type == MolStructureType.none: |
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logger.info(f"No structure found for compound {chid} of type {mol_type.name}.") |
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logger.debug(f"No structure found for compound {ch}.") |
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inchikey = "N/A" |
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else: |
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inchikey = ch["molecule_structures"]["standard_inchi_key"] |
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name = ch["pref_name"] |
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return ChemblCompound(chid, inchikey, name) |
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def get_query_type(self, inchikey: str) -> QueryType: |
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""" |
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Returns the type of query. |
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Args: |
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inchikey: |
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Returns: |
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""" |
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return MandosUtils.get_query_type(inchikey) |
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def get_compound_dot_dict(self, inchikey: str) -> NestedDotDict: |
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""" |
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Fetches info and put into a dict. |
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Args: |
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inchikey: |
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Returns: |
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**Only** ``molecule_chembl_id``, ``pref_name``, "and ``molecule_structures`` are guaranteed to exist |
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""" |
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# CHEMBL |
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kind = self.get_query_type(inchikey) |
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if kind == QueryType.smiles: |
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ch = self._get_compound_from_smiles(inchikey) |
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else: |
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ch = self._get_compound(inchikey) |
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# molecule_hierarchy can have the actual value None |
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if ch.get("molecule_hierarchy") is not None: |
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parent = ch["molecule_hierarchy"]["parent_chembl_id"] |
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if parent != ch["molecule_chembl_id"]: |
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ch = NestedDotDict(self._get_compound(inchikey)) |
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return ch |
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def _get_compound_from_smiles(self, smiles: str) -> NestedDotDict: |
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try: |
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results = list( |
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self.api.molecule.filter( |
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molecule_structures__canonical_smiles__flexmatch=smiles |
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).only(["molecule_chembl_id", "pref_name", "molecule_structures"]) |
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) |
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except (HTTPError, RequestException): |
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raise CompoundNotFoundError(f"Failed to find compound {smiles}") |
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if len(results) != 1: |
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raise CompoundNotFoundError(f"Got {len(results)} for compound {smiles}") |
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result = results[0] |
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if result is None: |
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raise CompoundNotFoundError(f"Result for compound {smiles} is null!") |
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return NestedDotDict(result) |
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def _get_compound(self, inchikey: str) -> NestedDotDict: |
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try: |
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result = self.api.molecule.get(inchikey) |
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if result is None: |
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raise CompoundNotFoundError(f"Result for compound {inchikey} is null!") |
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return NestedDotDict(result) |
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except (HTTPError, RequestException): |
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raise CompoundNotFoundError(f"Failed to find compound {inchikey}") |
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@dataclass(frozen=True, repr=True, order=True) |
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class Triple: |
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""" |
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Compound, predicate, object. |
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""" |
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compound_id: str |
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compound_lookup: str |
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compound_name: str |
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predicate: str |
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object_name: str |
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object_id: str |
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@classmethod |
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def tab_header(cls) -> str: |
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""" |
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Returns: |
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""" |
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return "\t".join( |
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[ |
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"compound_id", |
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"compound_lookup", |
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"compound_name", |
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"predicate", |
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"object_name", |
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"object_id", |
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] |
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) |
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@property |
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def tabs(self) -> str: |
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items = [ |
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self.compound_lookup, |
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self.compound_id, |
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self.compound_name, |
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self.predicate, |
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self.object_name, |
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self.object_id, |
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] |
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return "\t".join(["-" if k is None else str(k) for k in items]) |
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@property |
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def statement(self) -> str: |
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""" |
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Returns a simple text statement with brackets. |
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Returns: |
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""" |
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sub = f"{self.compound_lookup} [{self.compound_id}] [{self.compound_name}]>" |
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pred = f"<{self.predicate}>" |
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obj = f"<{self.object_name} [{self.object_id}]>" |
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return "\t".join([sub, pred, obj]) |
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__all__ = [ |
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"ChemblCompound", |
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"AbstractHit", |
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"QueryType", |
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"Search", |
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"Triple", |
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"CompoundNotFoundError", |
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] |
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