def find_children(uuid):
cols = [materials.c.id]
rows = [materials.c.uuid == uuid]
result = engine.execute(select(cols, *rows))
for row in result:
parent_id = row[0]
result.close()
cols = [materials.c.uuid]
rows = and_(materials.c.parent_id == parent_id,
or_(materials.c.retest_passed == None,
materials.c.retest_passed == True))
print('\nchildren of %s :' % uuid)
result = engine.execute(select(cols, rows))
for row in result:
print('\t%s' % row[0])
result.close()
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