cirq.Circuit.operation_at

Circuit.operation_at(qubit: cirq.ops.raw_types.Qid, moment_index: int) → Optional[cirq.ops.raw_types.Operation][source]

Finds the operation on a qubit within a moment, if any.

Parameters:
  • qubit – The qubit to check for an operation on.
  • moment_index – The index of the moment to check for an operation within. Allowed to be beyond the end of the circuit.
Returns:

None if there is no operation on the qubit at the given moment, or else the operation.