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[utils] traverse_obj: Allow unbranching using all and any (#9571)

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Authored by: Grub4K
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Simon Sawicki 2024-03-30 19:54:43 +01:00 committed by GitHub
parent 979ce2e786
commit 3699eeb67c
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2 changed files with 41 additions and 0 deletions
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32
test/test_traversal.py
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@ -377,3 +377,35 @@ class TestTraversal:
'special transformations should act on current element' 'special transformations should act on current element'
assert traverse_obj(etree, ('country', 0, ..., 'text()', {int_or_none})) == [1, 2008, 141100], \ assert traverse_obj(etree, ('country', 0, ..., 'text()', {int_or_none})) == [1, 2008, 141100], \
'special transformations should act on current element' 'special transformations should act on current element'
def test_traversal_unbranching(self):
assert traverse_obj(_TEST_DATA, [(100, 1.2), all]) == [100, 1.2], \
'`all` should give all results as list'
assert traverse_obj(_TEST_DATA, [(100, 1.2), any]) == 100, \
'`any` should give the first result'
assert traverse_obj(_TEST_DATA, [100, all]) == [100], \
'`all` should give list if non branching'
assert traverse_obj(_TEST_DATA, [100, any]) == 100, \
'`any` should give single item if non branching'
assert traverse_obj(_TEST_DATA, [('dict', 'None', 100), all]) == [100], \
'`all` should filter `None` and empty dict'
assert traverse_obj(_TEST_DATA, [('dict', 'None', 100), any]) == 100, \
'`any` should filter `None` and empty dict'
assert traverse_obj(_TEST_DATA, [{
'all': [('dict', 'None', 100, 1.2), all],
'any': [('dict', 'None', 100, 1.2), any],
}]) == {'all': [100, 1.2], 'any': 100}, \
'`all`/`any` should apply to each dict path separately'
assert traverse_obj(_TEST_DATA, [{
'all': [('dict', 'None', 100, 1.2), all],
'any': [('dict', 'None', 100, 1.2), any],
}], get_all=False) == {'all': [100, 1.2], 'any': 100}, \
'`all`/`any` should apply to dict regardless of `get_all`'
assert traverse_obj(_TEST_DATA, [('dict', 'None', 100, 1.2), all, {float}]) is None, \
'`all` should reset branching status'
assert traverse_obj(_TEST_DATA, [('dict', 'None', 100, 1.2), any, {float}]) is None, \
'`any` should reset branching status'
assert traverse_obj(_TEST_DATA, [('dict', 'None', 100, 1.2), all, ..., {float}]) == [1.2], \
'`all` should allow further branching'
assert traverse_obj(_TEST_DATA, [('dict', 'None', 'urls', 'data'), any, ..., 'index']) == [0, 1], \
'`any` should allow further branching'

9
yt_dlp/utils/traversal.py
View file

@ -228,6 +228,15 @@ def traverse_obj(
if not casesense and isinstance(key, str): if not casesense and isinstance(key, str):
key = key.casefold() key = key.casefold()
if key in (any, all):
has_branched = False
filtered_objs = (obj for obj in objs if obj not in (None, {}))
if key is any:
objs = (next(filtered_objs, None),)
else:
objs = (list(filtered_objs),)
continue
if __debug__ and callable(key): if __debug__ and callable(key):
# Verify function signature # Verify function signature
inspect.signature(key).bind(None, None) inspect.signature(key).bind(None, None)