qiskit/releasenotes/notes/1.0/remove-dag-none-be220777dc2...

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---
upgrade_transpiler:
- |
It is no longer allowable to pass ``None`` as the ``qargs`` or ``cargs`` parameters in
:meth:`.DAGCircuit.apply_operation_back` and :meth:`~.DAGCircuit.apply_operation_front`. If you
want to explicitly pass an empty argument, use the empty tuple ``()`` instead.