move _HasEps

qualtran/bloqs/basic_gates/rotation.py

@@ -12,7 +12,7 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 from functools import cached_property
-from typing import Optional, Protocol, runtime_checkable, Tuple, Union
+from typing import Optional, Tuple, Union
 
 import attrs
 import cirq
@@ -27,13 +27,6 @@
 from qualtran.symbolics import SymbolicFloat
 
 
-@runtime_checkable
-class _HasEps(Protocol):
-    """Protocol for typing `RotationBloq` base class mixin that has accuracy specified as eps."""
-
-    eps: float
-
-
 @frozen
 class ZPowGate(CirqGateAsBloqBase):
     r"""A gate that rotates around the Z axis of the Bloch sphere.

qualtran/resource_counting/t_counts_from_sigma.py

@@ -13,21 +13,26 @@
 #  limitations under the License.
 import inspect
 import sys
-from typing import cast, Mapping, Optional, Tuple, Type, TYPE_CHECKING
+from typing import cast, Mapping, Optional, Protocol, runtime_checkable, Tuple, Type, TYPE_CHECKING
 
 import cirq
 
 from qualtran.symbolics import ceil, SymbolicInt
 
 if TYPE_CHECKING:
     from qualtran import Bloq
-    from qualtran.bloqs.basic_gates.rotation import _HasEps
+
+
+@runtime_checkable
+class _HasEps(Protocol):
+    """Protocol for typing `RotationBloq` base class mixin that has accuracy specified as eps."""
+
+    eps: float
 
 
 def _get_all_rotation_types() -> Tuple[Type['_HasEps'], ...]:
     """Returns all classes defined in bloqs.basic_gates which have an attribute `eps`."""
     from qualtran.bloqs.basic_gates import GlobalPhase
-    from qualtran.bloqs.basic_gates.rotation import _HasEps
 
     bloqs_to_exclude = [GlobalPhase]