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[utils] Use key None in traverse_obj to return as-is

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pukkandan 2022-01-02 03:07:24 +05:30
parent 4c922dd3fc
commit 1797b073ed
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1 changed files with 4 additions and 3 deletions
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yt_dlp/utils.py
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@ -4939,11 +4939,12 @@ def traverse_obj(
''' Traverse nested list/dict/tuple
@param path_list A list of paths which are checked one by one.
Each path is a list of keys where each key is a string,
a function, a tuple of strings or "...".
a function, a tuple of strings/None or "...".
When a fuction is given, it takes the key as argument and
returns whether the key matches or not. When a tuple is given,
all the keys given in the tuple are traversed, and
"..." traverses all the keys in the object
"None" returns the object without traversal
@param default Default value to return
@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
@ -4962,8 +4963,8 @@ def _traverse_obj(obj, path, _current_depth=0):
nonlocal depth
path = tuple(variadic(path))
for i, key in enumerate(path):
if obj is None:
return None
if None in (key, obj):
return obj
if isinstance(key, (list, tuple)):
obj = [_traverse_obj(obj, sub_key, _current_depth) for sub_key in key]
key = ...