Remove quantum_info deprecated code in 0.22 (#10861)

* remove deprecated code in 0.22

* update docs

* Update releasenotes/notes/remove-deprecated-code-in-0.22-128475199e6f3cc2.yaml

---------

Co-authored-by: Luciano Bello <bel@zurich.ibm.com>

qiskit/quantum_info/__init__.py

@@ -96,7 +96,6 @@
 .. autofunction:: random_cnotdihedral
 .. autofunction:: random_pauli_table
 .. autofunction:: random_pauli_list
-.. autofunction:: random_stabilizer_table
 
 Analysis
 =========
@@ -152,7 +151,6 @@
     random_pauli_list,
     random_pauli_table,
     random_quantum_channel,
-    random_stabilizer_table,
     random_statevector,
     random_unitary,
 )

qiskit/quantum_info/operators/random.py

@@ -28,7 +28,6 @@
     random_pauli,
     random_pauli_list,
     random_pauli_table,
-    random_stabilizer_table,
 )
 
 DEFAULT_RNG = default_rng()

qiskit/quantum_info/operators/symplectic/pauli_utils.py

@@ -15,30 +15,19 @@
 
 from __future__ import annotations
 from qiskit.quantum_info.operators.symplectic.pauli_list import PauliList
-from qiskit.utils.deprecation import deprecate_arg
 
 
-@deprecate_arg(
-    "pauli_basis",
-    since="0.22",
-    additional_msg=(
-        "The argument ``pauli_list`` has no effect as the function always returns a PauliList."
-    ),
-)
-def pauli_basis(num_qubits: int, weight: bool = False, pauli_list=None) -> PauliList:
+def pauli_basis(num_qubits: int, weight: bool = False) -> PauliList:
     """Return the ordered PauliTable or PauliList for the n-qubit Pauli basis.
 
     Args:
         num_qubits (int): number of qubits
         weight (bool): if True optionally return the basis sorted by Pauli weight
                        rather than lexicographic order (Default: False)
-        pauli_list (bool): [Deprecated] This argument is deprecated and remains
-                           for backwards compatability. It has no effect.
 
     Returns:
         PauliList: the Paulis for the basis
     """
-    del pauli_list
     pauli_1q = PauliList(["I", "X", "Y", "Z"])
     if num_qubits == 1:
         return pauli_1q

qiskit/quantum_info/operators/symplectic/random.py

@@ -17,13 +17,11 @@
 import numpy as np
 from numpy.random import default_rng
 
-from qiskit.utils.deprecation import deprecate_func
 
 from .clifford import Clifford
 from .pauli import Pauli
 from .pauli_list import PauliList
 from .pauli_table import PauliTable
-from .stabilizer_table import StabilizerTable
 
 
 def random_pauli(
@@ -113,34 +111,6 @@ def random_pauli_table(
     return PauliTable(table)
 
 
-@deprecate_func(
-    additional_msg="Instead, use the function ``random_pauli_list``.",
-    since="0.22.0",
-)
-def random_stabilizer_table(num_qubits, size=1, seed=None):
-    """DEPRECATED: Return a random StabilizerTable.
-
-    Args:
-        num_qubits (int): the number of qubits.
-        size (int): Optional. The number of rows of the table (Default: 1).
-        seed (int or np.random.Generator): Optional. Set a fixed seed or
-                                           generator for RNG.
-
-    Returns:
-        PauliTable: a random StabilizerTable.
-    """
-    if seed is None:
-        rng = np.random.default_rng()
-    elif isinstance(seed, np.random.Generator):
-        rng = seed
-    else:
-        rng = default_rng(seed)
-
-    table = rng.integers(2, size=(size, 2 * num_qubits)).astype(bool)
-    phase = rng.integers(2, size=size).astype(bool)
-    return StabilizerTable(table, phase)
-
-
 def random_clifford(num_qubits: int, seed: int | np.random.Generator | None = None):
     """Return a random Clifford operator.
 

qiskit/quantum_info/random.py

@@ -22,7 +22,6 @@
     random_pauli_list,
     random_pauli_table,
     random_quantum_channel,
-    random_stabilizer_table,
     random_unitary,
 )
 from qiskit.quantum_info.states.random import random_density_matrix, random_statevector

releasenotes/notes/remove-deprecated-code-in-0.22-128475199e6f3cc2.yaml

@@ -0,0 +1,12 @@
+---
+upgrade:
+  - |
+    The method :meth:`qiskit.quantum_info.pauli_basis`
+    does not accept `pauli_list` argument any more.
+    It was deprecated in Qiskit 0.39 (with Terra 0.22), released on Oct 2022.
+
+  - |
+    The function ``random_stabilizer_table`` 
+    in the class :class:`qiskit.quantum_info.random` is removed. 
+    It was deprecated in Qiskit 0.39 (with Terra 0.22), released on Oct 2022.
+    Instead, use :func:``qiskit.quantum_info.random.random_pauli_list``.

test/python/quantum_info/operators/test_random.py

@@ -24,7 +24,6 @@
     Operator,
     PauliList,
     PauliTable,
-    StabilizerTable,
     Stinespring,
 )
 from qiskit.quantum_info.operators.predicates import is_hermitian_matrix
@@ -34,7 +33,6 @@
     random_pauli_list,
     random_pauli_table,
     random_quantum_channel,
-    random_stabilizer_table,
     random_unitary,
 )
 from qiskit.test import QiskitTestCase
@@ -284,42 +282,5 @@ def test_not_global_seed(self):
         self.assertFalse(np.all(rng_before == rng_after))
 
 
-@ddt
-class TestRandomStabilizerTable(QiskitTestCase):
-    """Testing random_stabilizer_table function."""
-
-    @combine(num_qubits=[1, 2, 3, 4, 5, 10, 50, 100, 200, 250], size=[1, 10, 100])
-    def test_valid(self, num_qubits, size):
-        """Test random_stabilizer_table {num_qubits}-qubits, size {size}."""
-        with self.assertWarns(DeprecationWarning):
-            value = random_stabilizer_table(num_qubits, size=size)
-        with self.subTest(msg="Test type"):
-            self.assertIsInstance(value, StabilizerTable)
-        with self.subTest(msg="Test num_qubits"):
-            self.assertEqual(value.num_qubits, num_qubits)
-        with self.subTest(msg="Test type"):
-            self.assertEqual(len(value), size)
-
-    def test_fixed_seed(self):
-        """Test fixing seed fixes output"""
-        seed = 1532
-        with self.assertWarns(DeprecationWarning):
-            value1 = random_stabilizer_table(10, size=10, seed=seed)
-            value2 = random_stabilizer_table(10, size=10, seed=seed)
-            self.assertEqual(value1, value2)
-
-    def test_not_global_seed(self):
-        """Test fixing random_hermitian seed is locally scoped."""
-        seed = 314159
-        test_cases = 100
-        with self.assertWarns(DeprecationWarning):
-            random_stabilizer_table(10, size=10, seed=seed)
-        rng_before = np.random.randint(1000, size=test_cases)
-        with self.assertWarns(DeprecationWarning):
-            random_stabilizer_table(10, seed=seed)
-        rng_after = np.random.randint(1000, size=test_cases)
-        self.assertFalse(np.all(rng_before == rng_after))
-
-
 if __name__ == "__main__":
     unittest.main()