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877add7 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | """Duplicate therapy checks."""
from __future__ import annotations
from app.common.types import Medication
from app.knowledge.drug_catalog import DRUG_CLASSES
def has_duplicate_therapy(
meds: list[Medication],
target_drug: str | None,
replacement_drug: str | None,
) -> bool:
classes = [DRUG_CLASSES.get(m.drug) for m in meds if DRUG_CLASSES.get(m.drug)]
if replacement_drug and DRUG_CLASSES.get(replacement_drug):
classes.append(DRUG_CLASSES[replacement_drug])
if target_drug and replacement_drug:
# replacement within class is expected; duplicate only when 3+ active in same class.
return any(classes.count(c) >= 3 for c in set(classes))
return any(classes.count(c) >= 3 for c in set(classes))
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