def test_none_empty_dict():
dxfattribs = {'height': 1.0, 'width': 0.8}
result = copy_attribs(dxfattribs)
assert result == {'height': 1.0, 'width': 0.8}
# do not change original attribs
result['height'] = 2.0
assert dxfattribs['height'] == 1.0
def test_None():
result = copy_attribs(None)
assert result == {}
def test_empty_dict():
result = copy_attribs({})
assert result == {}