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fix(#58): add | None to type annotations for fields defaulting to None #108

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Merged
Manideep3969 merged 1 commit into from
Aug 24, 2026
Merged

fix(#58): add | None to type annotations for fields defaulting to None #108

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4 changes: 2 additions & 2 deletions src/qc_compiler/autotuning.py
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Expand Up @@ -86,13 +86,13 @@ class AutotuneResult:
top_k_configs: Top-k configurations by estimated fidelity.
"""

best_config: TranspileConfig = None
best_config: TranspileConfig | None = None
best_estimated_fidelity: float = 0.0
all_results: dict[str, float] = field(default_factory=dict)
measured_fidelities: dict[str, float] = field(default_factory=dict)
circuits_evaluated: int = 0
search_space_size: int = 0
best_circuit: QuantumCircuit = None
best_circuit: QuantumCircuit | None = None
top_k_configs: list[TranspileConfig] = field(default_factory=list)

@property
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8 changes: 4 additions & 4 deletions src/qc_compiler/fusion.py
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Expand Up @@ -58,10 +58,10 @@ class FusionResult:
improvement: Fidelity improvement (after - before).
"""

original_circuit: QuantumCircuit = None
optimized_circuit: QuantumCircuit = None
original_metrics: CircuitMetrics = None
optimized_metrics: CircuitMetrics = None
original_circuit: QuantumCircuit | None = None
optimized_circuit: QuantumCircuit | None = None
original_metrics: CircuitMetrics | None = None
optimized_metrics: CircuitMetrics | None = None
chains_fused: int = 0
total_gates_before: int = 0
total_gates_after: int = 0
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2 changes: 1 addition & 1 deletion src/qc_compiler/scheduling.py
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Expand Up @@ -53,7 +53,7 @@ class ScheduleResult:
depth_optimized: Circuit depth with the chosen method.
"""

circuit: QuantumCircuit = None
circuit: QuantumCircuit | None = None
idle_times: dict[int, float] = field(default_factory=dict)
estimated_fidelity_asap: float = 0.0
estimated_fidelity_alap: float = 0.0
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6 changes: 3 additions & 3 deletions src/qc_compiler/transpiler.py
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Expand Up @@ -79,8 +79,8 @@ class QCompilerResult:
config: The OptimizerConfig used.
"""

original_circuit: QuantumCircuit = None
optimized_circuit: QuantumCircuit = None
original_circuit: QuantumCircuit | None = None
optimized_circuit: QuantumCircuit | None = None
fidelity_before: float = 0.0
fidelity_after: float = 0.0
fusion_result: FusionResult | None = None
Expand All @@ -91,7 +91,7 @@ class QCompilerResult:
batch_plan: BatchPlan | None = None
subcircuits: list[QuantumCircuit] | None = None
passes_applied: list[str] = field(default_factory=list)
config: OptimizerConfig = None
config: OptimizerConfig | None = None

@property
def fidelity_improvement(self) -> float:
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