diff options
Diffstat (limited to 'lib/sqlalchemy/sql/traversals.py')
| -rw-r--r-- | lib/sqlalchemy/sql/traversals.py | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/lib/sqlalchemy/sql/traversals.py b/lib/sqlalchemy/sql/traversals.py index 4a135538e..8c63fcba1 100644 --- a/lib/sqlalchemy/sql/traversals.py +++ b/lib/sqlalchemy/sql/traversals.py @@ -1,5 +1,6 @@ from collections import deque from collections import namedtuple +import itertools import operator from . import operators @@ -589,28 +590,22 @@ class _GetChildren(InternalTraversal): return (element,) def visit_clauseelement_list(self, element, **kw): - return tuple(element) + return element def visit_clauseelement_tuples(self, element, **kw): - tup = () - for elem in element: - tup += elem - return tup + return itertools.chain.from_iterable(element) def visit_fromclause_canonical_column_collection(self, element, **kw): - if kw.get("column_collections", False): - return tuple(element) - else: - return () + return () def visit_string_clauseelement_dict(self, element, **kw): - return tuple(element.values()) + return element.values() def visit_fromclause_ordered_set(self, element, **kw): - return tuple(element) + return element def visit_clauseelement_unordered_set(self, element, **kw): - return tuple(element) + return element def visit_dml_ordered_values(self, element, **kw): for k, v in element: |