**Construction**was a property of all Part geometry objects.

This is no longer true, so some python scripts might now raise an AttributeError :

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`<class 'AttributeError'>: 'Part. ...' object has no attribute 'Construction'`

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```
if a_sketch.Geometry[i].Construction:
...
```

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```
try:
construction = a_sketch.Geometry[i].Construction
except AttributeError:
construction = a_sketch.getConstruction(i)
if construction:
...
```