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Return -1 if constraint not found #3

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Merged
merged 1 commit into from
Jan 28, 2025
Merged

Return -1 if constraint not found #3

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6 changes: 5 additions & 1 deletion mip/highs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1337,7 +1337,11 @@ def remove_constrs(self: "SolverHighs", constrsList: List[int]):

def constr_get_index(self: "SolverHighs", name: str) -> int:
idx = ffi.new("int *")
self._lib.Highs_getRowByName(self._model, name.encode("utf-8"), idx)
status = self._lib.Highs_getRowByName(self._model, name.encode("utf-8"), idx)
if status == STATUS_ERROR:
# This means that no constraint with that name was found. Unfortunately,
# Highs: getRowByName doesn't assign a value to idx in that case.
return -1
return idx[0]

# Variable-related getters/setters
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