add ops.swapaxes and ops.swapdims

docs/api/api_python/mindspore.ops.rst

@@ -502,6 +502,8 @@ Array操作
     mindspore.ops.stack
     mindspore.ops.strided_slice
     mindspore.ops.sum
+    mindspore.ops.swapaxes
+    mindspore.ops.swapdims
     mindspore.ops.tensor_scatter_add
     mindspore.ops.tensor_scatter_div
     mindspore.ops.tensor_scatter_max

docs/api/api_python/ops/mindspore.ops.func_swapaxes.rst

@@ -0,0 +1,19 @@
+mindspore.ops.swapaxes
+=======================
+
+.. py:function:: mindspore.ops.swapaxes(x, axis0, axis1)
+
+    交换Tensor的两个维度。
+
+    参数：
+        - **x** (Tensor) - 输入Tensor。
+        - **axis0** (int) - 第一个维度。
+        - **axis1** (int) - 第二个维度。
+
+    返回：
+        转化后的Tensor，与输入具有相同的数据类型。
+
+    异常：
+        - **TypeError** - `x` 不是Tensor类型。
+        - **TypeError** - `axis0` 或 `axis1` 不是整数。
+        - **ValueError** - `axis0` 或 `axis1` 不在 `[-ndim, ndim-1]` 范围内。

docs/api/api_python/ops/mindspore.ops.func_swapdims.rst

@@ -0,0 +1,20 @@
+mindspore.ops.swapdims
+=======================
+
+.. py:function:: mindspore.ops.swapdims(x, dim0, dim1)
+
+    交换Tensor的两个维度。
+    该函数和 :func:`mindspore.ops.swapaxes` 功能一致。
+
+    参数：
+        - **x** (Tensor) - 输入Tensor。
+        - **dim0** (int) - 第一个维度。
+        - **dim1** (int) - 第二个维度。
+
+    返回：
+        转化后的Tensor，与输入具有相同的数据类型。
+
+    异常：
+        - **TypeError** - `x` 不是Tensor类型。
+        - **TypeError** - `dim0` 或 `dim1` 不是整数。
+        - **ValueError** - `dim0` 或 `dim1` 不在 `[-ndim, ndim-1]` 范围内。

docs/api/api_python_en/mindspore.ops.rst

@@ -502,6 +502,8 @@ Array Operation
     mindspore.ops.stack
     mindspore.ops.strided_slice
     mindspore.ops.sum
+    mindspore.ops.swapaxes
+    mindspore.ops.swapdims
     mindspore.ops.tensor_scatter_add
     mindspore.ops.tensor_scatter_min
     mindspore.ops.tensor_scatter_max

mindspore/python/mindspore/_checkparam.py

@@ -848,18 +848,18 @@ class Validator:
 
     @staticmethod
     def check_swapaxes_axis(axes, ndim):
-        """Check all the axes argument for tensor.swapaxes"""
+        """Check all the axes argument for ops.swapaxes"""
         if isinstance(axes, int):
             Validator.check_axis_in_range(axes, ndim)
             return axes % ndim
         if isinstance(axes, (tuple, list)):
             for axis in axes:
                 if not isinstance(axis, int):
-                    raise TypeError(f"For Tensor.swapaxes, the axis argument must be integer, but got {type(axis)}.")
+                    raise TypeError(f"For ops.swapaxes, the axis argument must be integer, but got {type(axis)}.")
                 Validator.check_axis_in_range(axis, ndim)
             axes = tuple(map(lambda x: x % ndim, axes))
             return axes
-        raise TypeError(f"For Tensor.swapaxes, the argument 'axes' must be integer, list or tuple for check, "
+        raise TypeError(f"For ops.swapaxes, the argument 'axes' must be integer, list or tuple for check, "
                         f"but got {type(axes)}.")
 
     @staticmethod

mindspore/python/mindspore/common/tensor.py

@@ -1819,22 +1819,7 @@ class Tensor(Tensor_):
             (4,3,2)
         """
         self._init_check()
-        axis1, axis2 = validator.check_swapaxes_axis((axis1, axis2), self.ndim)
-
-        if axis1 == axis2:
-            return self
-        if axis1 > axis2:
-            axis1, axis2 = axis2, axis1
-
-        perm = tuple(range(0, self.ndim))
-        if axis2 + 1 < self.ndim:
-            new_perm = perm[0:axis1] + perm[axis2:axis2 + 1] + \
-                       perm[axis1 + 1:axis2] + perm[axis1:axis1 + 1] + perm[axis2 + 1:]
-        else:
-            new_perm = perm[0:axis1] + perm[axis2:axis2 + 1] + \
-                       perm[axis1 + 1:axis2] + perm[axis1:axis1 + 1]
-
-        return tensor_operator_registry.get('transpose')()(self, new_perm)
+        return tensor_operator_registry.get('swapaxes')(self, axis1, axis2)
 
     def squeeze(self, axis=None):
         """

mindspore/python/mindspore/ops/function/__init__.py

@@ -141,6 +141,8 @@ from .array_func import (
     lstsq,
     mvlgamma,
     argsort,
+    swapaxes,
+    swapdims,
     sequence_mask,
     repeat_elements,
     repeat_interleave,

mindspore/python/mindspore/ops/function/array_func.py

@@ -6046,6 +6046,94 @@ def count_nonzero(x, dims=None):
     return count_nonzero_(x)
 
 
+#TODO: remove comment
+@constexpr
+def _check_swapaxes_axis(axes, ndim):
+    return validator.check_swapaxes_axis(axes, ndim)
+
+
+def swapaxes(x, axis0, axis1):
+    '''
+    Interchange two axes of a tensor.
+
+    Args:
+        x(Tensor): Input tensor.
+        axis0 (int): First axis.
+        axis1 (int): Second axis.
+
+    Returns:
+        Transposed tensor, has the same data type as `x`.
+
+    Raises:
+        TypeError: If argument `x` is not Tensor.
+        TypeError: If `axis0` or `axis1` is not integer.
+        ValueError: If `axis0` or `axis1` is not in the range of :math:`[-ndim, ndim-1]`.
+
+    Supported Platforms:
+        ``Ascend`` ``GPU`` ``CPU``
+
+    Examples:
+        >>> import numpy as np
+        >>> import mindspore.ops as ops
+        >>> from mindspore import Tensor
+        >>> x = Tensor(np.ones((2,3,4), dtype=np.float32))
+        >>> output = ops.swapaxes(x, 0, 2)
+        >>> print(output.shape)
+        (4,3,2)
+    '''
+    if not isinstance(x, Tensor):
+        raise TypeError(f'For ops.swapaxes, parameter `x` must be Tensor, but got {type(x)}')
+
+    axis0, axis1 = _check_swapaxes_axis((axis0, axis1), x.ndim)
+    if axis0 == axis1:
+        return x
+    if axis0 > axis1:
+        axis0, axis1 = axis1, axis0
+
+    perm = tuple(builtins.range(0, x.ndim))
+    if axis1 + 1 < x.ndim:
+        new_perm = perm[0:axis0] + perm[axis1:axis1 + 1] + \
+                   perm[axis0 + 1:axis1] + perm[axis0:axis0 + 1] + perm[axis1 + 1:]
+    else:
+        new_perm = perm[0:axis0] + perm[axis1:axis1 + 1] + \
+                   perm[axis0 + 1:axis1] + perm[axis0:axis0 + 1]
+
+    return _get_cache_prim(P.Transpose)()(x, new_perm)
+
+
+def swapdims(x, dim0, dim1):
+    '''
+    Interchange two dims of a tensor.
+    This function is equivalent to :func:`mindspore.ops.swapaxes` function.
+
+    Args:
+        x(Tensor): Input tensor.
+        dim0 (int): First dim.
+        dim1 (int): Second dim.
+
+    Returns:
+        Transposed tensor, has the same data type as `x`.
+
+    Raises:
+        TypeError: If argument `x` is not Tensor.
+        TypeError: If `dim0` or `dim1` is not integer.
+        ValueError: If `dim0` or `dim1` is not in the range of :math:`[-ndim, ndim-1]`.
+
+    Supported Platforms:
+        ``Ascend`` ``GPU`` ``CPU``
+
+    Examples:
+        >>> import numpy as np
+        >>> import mindspore.ops as ops
+        >>> from mindspore import Tensor
+        >>> x = Tensor(np.ones((2,3,4), dtype=np.float32))
+        >>> output = ops.swapdims(x, 0, 2)
+        >>> print(output.shape)
+        (4,3,2)
+    '''
+    return F.swapaxes(x, dim0, dim1)
+
+
 @constexpr
 def _check_is_int(arg_value, arg_name, op_name):
     arg_value = validator.check_is_int(arg_value, arg_name, op_name)
@@ -6352,6 +6440,8 @@ __all__ = [
     'diagonal',
     'lstsq',
     'mvlgamma',
+    'swapaxes',
+    'swapdims',
     'argsort',
     'sequence_mask',
     'repeat_elements',

mindspore/python/mindspore/ops/functional.py

@@ -398,6 +398,7 @@ tensor_operator_registry.register('deg2rad', deg2rad)
 tensor_operator_registry.register('copysign', copysign)
 tensor_operator_registry.register('roll', Roll)
 tensor_operator_registry.register('rot90', rot90)
+tensor_operator_registry.register('swapaxes', swapaxes)
 tensor_operator_registry.register('repeat_elements', repeat_elements)
 
 __all__ = [name for name in dir() if name[0] != "_"]

tests/st/ops/test_func_swapaxes.py

@@ -0,0 +1,63 @@
+# Copyright 2022 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+import numpy as np
+import pytest
+import mindspore as ms
+from mindspore import ops
+import mindspore.nn as nn
+from tests.st.numpy_native.utils import check_all_results, to_tensor
+
+
+class NetSwapAxes(nn.Cell):
+    def construct(self, x, axis0, axis1):
+        return ops.swapaxes(x, axis0=axis0, axis1=axis1)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_cpu
+@pytest.mark.platform_arm_cpu
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.platform_x86_ascend_training
+@pytest.mark.platform_arm_ascend_training
+@pytest.mark.env_onecard
+@pytest.mark.parametrize('mode', [ms.GRAPH_MODE, ms.PYNATIVE_MODE])
+def test_swapaxes(mode):
+    """
+    Feature: swapaxes
+    Description: Verify the result of swapaxes
+    Expectation: success.
+    """
+    ms.set_context(mode=mode)
+    np_array = np.random.random((3, 4, 5)).astype('float32')
+
+    np_swap_output = []
+    np_swap_output.append(np.swapaxes(np_array, 0, 1))
+    np_swap_output.append(np.swapaxes(np_array, 1, 0))
+    np_swap_output.append(np.swapaxes(np_array, 1, 1))
+    np_swap_output.append(np.swapaxes(np_array, 2, 1))
+    np_swap_output.append(np.swapaxes(np_array, 1, 2))
+    np_swap_output.append(np.swapaxes(np_array, 2, 2))
+
+    swapaxes_op = NetSwapAxes()
+    op_swap_output = []
+    ms_array = to_tensor(np_array)
+    op_swap_output.append(swapaxes_op(ms_array, 0, 1))
+    op_swap_output.append(swapaxes_op(ms_array, 1, 0))
+    op_swap_output.append(swapaxes_op(ms_array, 1, 1))
+    op_swap_output.append(swapaxes_op(ms_array, 2, 1))
+    op_swap_output.append(swapaxes_op(ms_array, 1, 2))
+    op_swap_output.append(swapaxes_op(ms_array, 2, 2))
+
+    check_all_results(np_swap_output, op_swap_output)

tests/st/ops/test_func_swapdims.py

@@ -0,0 +1,63 @@
+# Copyright 2022 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+import numpy as np
+import pytest
+import mindspore as ms
+from mindspore import ops
+import mindspore.nn as nn
+from tests.st.numpy_native.utils import check_all_results, to_tensor
+
+
+class NetSwapDims(nn.Cell):
+    def construct(self, x, dim0, dim1):
+        return ops.swapdims(x, dim0=dim0, dim1=dim1)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_cpu
+@pytest.mark.platform_arm_cpu
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.platform_x86_ascend_training
+@pytest.mark.platform_arm_ascend_training
+@pytest.mark.env_onecard
+@pytest.mark.parametrize('mode', [ms.GRAPH_MODE, ms.PYNATIVE_MODE])
+def test_swapdims(mode):
+    """
+    Feature: swapdims
+    Description: Verify the result of swapdims
+    Expectation: success.
+    """
+    ms.set_context(mode=mode)
+    np_array = np.random.random((3, 4, 5)).astype('float32')
+
+    np_swap_output = []
+    np_swap_output.append(np.swapaxes(np_array, 0, 1))
+    np_swap_output.append(np.swapaxes(np_array, 1, 0))
+    np_swap_output.append(np.swapaxes(np_array, 1, 1))
+    np_swap_output.append(np.swapaxes(np_array, 2, 1))
+    np_swap_output.append(np.swapaxes(np_array, 1, 2))
+    np_swap_output.append(np.swapaxes(np_array, 2, 2))
+
+    swapdims_op = NetSwapDims()
+    op_swap_output = []
+    ms_array = to_tensor(np_array)
+    op_swap_output.append(swapdims_op(ms_array, 0, 1))
+    op_swap_output.append(swapdims_op(ms_array, 1, 0))
+    op_swap_output.append(swapdims_op(ms_array, 1, 1))
+    op_swap_output.append(swapdims_op(ms_array, 2, 1))
+    op_swap_output.append(swapdims_op(ms_array, 1, 2))
+    op_swap_output.append(swapdims_op(ms_array, 2, 2))
+
+    check_all_results(np_swap_output, op_swap_output)