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# ==========================================================================
#
# Copyright NumFOCUS
#
# 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
#
# https://www.apache.org/licenses/LICENSE-2.0.txt
#
# 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 itk
Dimension = 2
index = itk.Index[Dimension]()
index[0] = 1
index[1] = 2
offset = itk.Offset[Dimension]()
offset.Fill(1)
a = index + offset
b = offset + index
c = index + index
d = offset + offset
e = index - offset
assert a[0] == 2
assert a[1] == 3
assert b[0] == 2
assert b[1] == 3
assert c[0] == 2
assert c[1] == 4
assert d[0] == 2
assert d[1] == 2
assert e[0] == 0
assert e[1] == 1
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