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[utils] Improve traverse_obj

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pukkandan 2021-07-21 11:17:27 +05:30
parent 11f9be0912
commit 352d63fdb5
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2 changed files with 20 additions and 11 deletions
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10
yt_dlp/extractor/youtube.py
View file

@ -1929,10 +1929,11 @@ def _extract_signature_timestamp(self, video_id, player_url, ytcfg=None, fatal=F
return sts
def _mark_watched(self, video_id, player_responses):
playback_url = url_or_none((traverse_obj(
player_responses, ('playbackTracking', 'videostatsPlaybackUrl', 'baseUrl'),
expected_type=str) or [None])[0])
playback_url = traverse_obj(
player_responses, (..., 'playbackTracking', 'videostatsPlaybackUrl', 'baseUrl'),
expected_type=url_or_none, get_all=False)
if not playback_url:
self.report_warning('Unable to mark watched')
return
parsed_playback_url = compat_urlparse.urlparse(playback_url)
qs = compat_urlparse.parse_qs(parsed_playback_url.query)
@ -2606,8 +2607,7 @@ def _real_extract(self, url):
self._get_requested_clients(url, smuggled_data),
video_id, webpage, master_ytcfg, player_url, identity_token))
get_first = lambda obj, keys, **kwargs: (
traverse_obj(obj, (..., *variadic(keys)), **kwargs) or [None])[0]
get_first = lambda obj, keys, **kwargs: traverse_obj(obj, (..., *variadic(keys)), **kwargs, get_all=False)
playability_statuses = traverse_obj(
player_responses, (..., 'playabilityStatus'), expected_type=dict, default=[])

21
yt_dlp/utils.py
View file

@ -6225,7 +6225,7 @@ def load_plugins(name, suffix, namespace):
def traverse_obj(
obj, *path_list, default=None, expected_type=None,
obj, *path_list, default=None, expected_type=None, get_all=True,
casesense=True, is_user_input=False, traverse_string=False):
''' Traverse nested list/dict/tuple
@param path_list A list of paths which are checked one by one.
@ -6234,7 +6234,8 @@ def traverse_obj(
all the keys given in the tuple are traversed, and
"..." traverses all the keys in the object
@param default Default value to return
@param expected_type Only accept final value of this type
@param expected_type Only accept final value of this type (Can also be any callable)
@param get_all Return all the values obtained from a path or only the first one
@param casesense Whether to consider dictionary keys as case sensitive
@param is_user_input Whether the keys are generated from user input. If True,
strings are converted to int/slice if necessary
@ -6281,6 +6282,13 @@ def _traverse_obj(obj, path, _current_depth=0):
return None
return obj
if isinstance(expected_type, type):
type_test = lambda val: val if isinstance(val, expected_type) else None
elif expected_type is not None:
type_test = expected_type
else:
type_test = lambda val: val
for path in path_list:
depth = 0
val = _traverse_obj(obj, path)
@ -6288,11 +6296,12 @@ def _traverse_obj(obj, path, _current_depth=0):
if depth:
for _ in range(depth - 1):
val = itertools.chain.from_iterable(v for v in val if v is not None)
val = ([v for v in val if v is not None] if expected_type is None
else [v for v in val if isinstance(v, expected_type)])
val = [v for v in map(type_test, val) if v is not None]
if val:
return val
elif expected_type is None or isinstance(val, expected_type):
return val if get_all else val[0]
else:
val = type_test(val)
if val is not None:
return val
return default