Construct supports the filter function.

mindspore/_extends/parse/resources.py

@@ -111,6 +111,7 @@ convert_object_map = {
     T.len:          M.ms_len,
     T.bool_:        M.bool_,
     T.map:          C.Map(),
+    T.filter:       M.filter_,
     T.partial:      F.partial,
     T.zip:          C.zip_operation,
     T.enumerate:    M.enumerate_,

mindspore/_extends/parse/standard_method.py

@@ -1793,3 +1793,11 @@ def list_append(self_, item):
 def to_array(x):
     """Implementation of `to_array`."""
     return x.__ms_to_array__()
+
+def filter_(fun, iter_):
+    """Support the use of built-in function filter."""
+    result = []
+    for elem in iter_:
+        if fun(elem):
+            result.append(elem)
+    return result

mindspore/_extends/parse/trope.py

@@ -27,7 +27,8 @@ from operator import (  # noqa
 
 # support system function call
 from builtins import (  # noqa
-    bool, getattr, setattr, len, iter, next, pow, range, map, zip, print, enumerate, isinstance
+    bool, getattr, setattr, len, iter, next, pow, range, map, zip,
+    print, enumerate, isinstance, filter
 )
 
 # support functools
@@ -45,7 +46,7 @@ __all__ = ['add', 'sub', 'mul', 'truediv', 'floordiv', 'mod', 'eq', 'ne', 'lt',
            'matmul', 'getitem', 'setitem',
            'bool', 'getattr', 'setattr', 'len', 'iter', 'next', 'pow', 'range', 'map', 'zip',
            'partial', 'print', 'enumerate', 'isinstance',
-           'exp', 'log', 'sin', 'cos', 'tan']
+           'exp', 'log', 'sin', 'cos', 'tan', 'filter']
 
 
 def MakeTuple(*elts):  # pragma: no cover

tests/ut/python/ops/test_filter.py

@@ -0,0 +1,47 @@
+# Copyright 2021 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.
+# ============================================================================
+""" test_filter """
+
+from mindspore.nn import Cell
+from mindspore import context
+
+context.set_context(mode=context.GRAPH_MODE, save_graphs=True)
+
+
+def is_odd(x):
+    """ Judge whether the parameter is odd """
+
+    if x % 2:
+        return True
+    return False
+
+
+class NetWork(Cell):
+    """ NetWork definition """
+
+    def __init__(self):
+        super(NetWork, self).__init__()
+        self.func = is_odd
+
+    def construct(self, list_):
+        set_func = filter
+        ret = set_func(self.func, list_)
+        return ret
+
+
+list1 = [1, 2, 3]
+net1 = NetWork()
+result = net1(list1)
+assert result == (1, 3)