Enable installation and testing with Python 3.14 (#7761)

Partially implements #7832

---------

Co-authored-by: Michael Hucka <mhucka@caltech.edu>

Author: pavoljuhas

.github/workflows/ci-daily.yml

@@ -21,7 +21,7 @@ jobs:
     name: Pytest Ubuntu
     strategy:
       matrix:
-        python-version: ['3.11', '3.12', '3.13']
+        python-version: ['3.11', '3.12', '3.13', '3.14']
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
@@ -47,7 +47,7 @@ jobs:
     name: Pytest Windows
     strategy:
       matrix:
-        python-version: ['3.11', '3.12', '3.13']
+        python-version: ['3.11', '3.12', '3.13', '3.14']
     runs-on: windows-2022
     steps:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
@@ -73,6 +73,7 @@ jobs:
     name: Pytest MacOS
     strategy:
       matrix:
+        # TODO: #7832 - enable '3.14' once qiskit-aer provides binary wheels
         python-version: ['3.11', '3.12', '3.13']
     runs-on: macos-15
     steps:

.github/workflows/ci.yml

@@ -193,7 +193,7 @@ jobs:
     name: Pytest Ubuntu
     strategy:
       matrix:
-        python-version: ['3.11', '3.12', '3.13']
+        python-version: ['3.11', '3.12', '3.13', '3.14']
     runs-on: ubuntu-22.04-x64-8-core
     steps:
       - name: Check out source repository
@@ -296,7 +296,7 @@ jobs:
     name: Pytest Windows
     strategy:
       matrix:
-        python-version: ['3.11', '3.12', '3.13']
+        python-version: ['3.11', '3.12', '3.13', '3.14']
     runs-on: windows-2022-x64-8-core
     steps:
       - name: Check out source repository
@@ -324,6 +324,7 @@ jobs:
     name: Pytest MacOS
     strategy:
       matrix:
+        # TODO: #7832 - enable '3.14' once qiskit-aer provides binary wheels
         python-version: ['3.11', '3.12', '3.13']
     # macos-15-large is Intel; macos-15-xlarge is ARM and the one we want.
     runs-on: macos-15-xlarge

cirq-aqt/setup.py

@@ -66,6 +66,7 @@
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
+        "Programming Language :: Python :: 3.14",
         "Topic :: Scientific/Engineering :: Quantum Computing",
         "Topic :: Software Development :: Libraries :: Python Modules",
         "Typing :: Typed",

cirq-core/cirq/circuits/frozen_circuit_test.py

@@ -85,10 +85,8 @@ def test_immutable() -> None:
     q = cirq.LineQubit(0)
     c = cirq.FrozenCircuit(cirq.X(q), cirq.H(q))
 
-    # Match one of two strings. The second one is message returned since python 3.11.
     with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'moments' of 'FrozenCircuit' object has no setter)",
+        AttributeError, match="property 'moments' of 'FrozenCircuit' object has no setter"
     ):
         c.moments = (cirq.Moment(cirq.H(q)), cirq.Moment(cirq.X(q)))  # type: ignore[misc]
 

cirq-core/cirq/devices/grid_qubit_test.py

@@ -354,38 +354,24 @@ def test_to_json() -> None:
 
 
 def test_immutable() -> None:
-    # Match one of two strings. The second one is message returned since python 3.11.
-    with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'col' of 'GridQubit' object has no setter)",
-    ):
+    with pytest.raises(AttributeError, match="property 'col' of 'GridQubit' object has no setter"):
         q = cirq.GridQubit(1, 2)
         q.col = 3  # type: ignore[misc]
 
-    with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'row' of 'GridQubit' object has no setter)",
-    ):
+    with pytest.raises(AttributeError, match="property 'row' of 'GridQubit' object has no setter"):
         q = cirq.GridQubit(1, 2)
         q.row = 3  # type: ignore[misc]
 
-    with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'col' of 'GridQid' object has no setter)",
-    ):
+    with pytest.raises(AttributeError, match="property 'col' of 'GridQid' object has no setter"):
         qid = cirq.GridQid(1, 2, dimension=3)
         qid.col = 3  # type: ignore[misc]
 
-    with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'row' of 'GridQid' object has no setter)",
-    ):
+    with pytest.raises(AttributeError, match="property 'row' of 'GridQid' object has no setter"):
         qid = cirq.GridQid(1, 2, dimension=3)
         qid.row = 3  # type: ignore[misc]
 
     with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'dimension' of 'GridQid' object has no setter)",
+        AttributeError, match="property 'dimension' of 'GridQid' object has no setter"
     ):
         qid = cirq.GridQid(1, 2, dimension=3)
         qid.dimension = 3  # type: ignore[misc]

cirq-core/cirq/devices/line_qubit_test.py

@@ -264,18 +264,11 @@ def _qid_shape_(self):
 
 
 def test_immutable() -> None:
-    # Match one of two strings. The second one is message returned since python 3.11.
-    with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'x' of 'LineQubit' object has no setter)",
-    ):
+    with pytest.raises(AttributeError, match="property 'x' of 'LineQubit' object has no setter"):
         q = cirq.LineQubit(5)
         q.x = 6  # type: ignore[misc]
 
-    with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'x' of 'LineQid' object has no setter)",
-    ):
+    with pytest.raises(AttributeError, match="property 'x' of 'LineQid' object has no setter"):
         qid = cirq.LineQid(5, dimension=4)
         qid.x = 6  # type: ignore[misc]
 

cirq-core/cirq/ops/gate_operation_test.py

@@ -45,18 +45,15 @@ def test_immutable() -> None:
     a, b = cirq.LineQubit.range(2)
     op = cirq.X(a)
 
-    # Match one of two strings. The second one is message returned since python 3.11.
     with pytest.raises(
         AttributeError,
-        match="(can't set attribute)|"
-        "(property 'gate' of 'SingleQubitPauliStringGateOperation' object has no setter)",
+        match="property 'gate' of 'SingleQubitPauliStringGateOperation' object has no setter",
     ):
         op.gate = cirq.Y
 
     with pytest.raises(
         AttributeError,
-        match="(can't set attribute)|"
-        "(property 'qubits' of 'SingleQubitPauliStringGateOperation' object has no setter)",
+        match="property 'qubits' of 'SingleQubitPauliStringGateOperation' object has no setter",
     ):
         op.qubits = [b]
 

cirq-core/cirq/ops/gateset_test.py

@@ -121,20 +121,16 @@ def test_invalid_gate_family() -> None:
 
 def test_gate_family_immutable() -> None:
     g = cirq.GateFamily(CustomX)
-    # Match one of two strings. The second one is message returned since python 3.11.
     with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'gate' of 'GateFamily' object has no setter)",
+        AttributeError, match="property 'gate' of 'GateFamily' object has no setter"
     ):
         g.gate = CustomXPowGate  # type: ignore[misc]
     with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'name' of 'GateFamily' object has no setter)",
+        AttributeError, match="property 'name' of 'GateFamily' object has no setter"
     ):
         g.name = 'new name'  # type: ignore[misc]
     with pytest.raises(
-        AttributeError,
-        match="(can't set attribute)|(property 'description' of 'GateFamily' object has no setter)",
+        AttributeError, match="property 'description' of 'GateFamily' object has no setter"
     ):
         g.description = 'new description'  # type: ignore[misc]
 

cirq-core/cirq/ops/linear_combinations_test.py

@@ -1247,10 +1247,11 @@ def test_from_boolean_expression(boolean_expr, expected_pauli_sum) -> None:
     boolean = sympy_parser.parse_expr(boolean_expr)
     qubit_map = {name: cirq.NamedQubit(name) for name in sorted(cirq.parameter_names(boolean))}
     actual = cirq.PauliSum.from_boolean_expression(boolean, qubit_map)
-    # Instead of calling str() directly, first make sure that the items are sorted. This is to make
-    # the unit test more robut in case Sympy would result in a different parsing order. By sorting
-    # the individual items, we would have a canonical representation.
-    actual_items = list(sorted(str(pauli_string) for pauli_string in actual))
+    # Instead of calling str() directly, first make sure that the items are sorted and their
+    # coefficients normalized to have "+0j" imaginary component (instead of "-0j") as in the
+    # expected_pauli_sum.  This is to make the unit test more robust should Sympy change its
+    # parsing order.
+    actual_items = sorted(str(pauli_string).replace('-0j', '+0j') for pauli_string in actual)
     assert expected_pauli_sum == actual_items
 
 

cirq-core/setup.py

@@ -74,6 +74,7 @@
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
+        "Programming Language :: Python :: 3.14",
         "Topic :: Scientific/Engineering :: Quantum Computing",
         "Topic :: Software Development :: Libraries :: Python Modules",
         "Typing :: Typed",