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python: use _sort_key when encoding object sets #141

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Merged
JPEWdev merged 1 commit into from
Aug 13, 2026
Merged

python: use _sort_key when encoding object sets #141

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5 changes: 4 additions & 1 deletion src/shacl2code/lang/templates/python/model.py.j2
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Original file line number Diff line number Diff line change
Expand Up @@ -1820,7 +1820,10 @@ class SHACLObjectSet(object):
else:
objects = list(self.objects)

objects.sort(key=key)
# Default to _sort_key so Timsort computes each key once. Falling back
# to __lt__ (key=None) rebuilds the key on every comparison via
# getattr, which dominates runtime on large object sets.
objects.sort(key=key if key is not None else SHACLObject._sort_key)

if use_list:
# Ensure top level objects are only written in the top level graph
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