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[utils] Fix broken Py 3.11+ compat in traverse_obj()

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* inspect.getargspec is missing despite doc claiming backward compat
* replace with emulation of `Signature.bind()`
This commit is contained in:
dirkf 2023-07-19 13:01:02 +01:00
parent b2741f2654
commit a190b55964
1 changed files with 32 additions and 4 deletions
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36
youtube_dl/utils.py
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@ -6109,6 +6109,37 @@ def clean_podcast_url(url):
)/''', '', url)
if __debug__:
# Raise TypeError if args can't be bound
# needs compat owing to unstable inspect API, thanks PSF :-(
try:
inspect.signature
def _try_bind_args(fn, *args, **kwargs):
inspect.signature(fn).bind(*args, **kwargs)
except AttributeError:
# Py < 3.3
def _try_bind_args(fn, *args, **kwargs):
fn_args = inspect.getargspec(fn)
# Py2: ArgInfo(args, varargs, keywords, defaults)
# Py3: ArgSpec(args, varargs, keywords, defaults)
if not fn_args.keywords:
for k in kwargs:
if k not in (fn_args.args or []):
raise TypeError("got an unexpected keyword argument: '{0}'".format(k))
if not fn_args.varargs:
args_to_bind = len(args)
bindable = len(fn_args.args or [])
if args_to_bind > bindable:
raise TypeError('too many positional arguments')
bindable -= len(fn_args.defaults or [])
if args_to_bind < bindable:
if kwargs:
bindable -= len(set(fn_args.args or []) & set(kwargs))
if bindable > args_to_bind:
raise TypeError("missing a required argument: '{0}'".format(fn_args.args[args_to_bind]))
def traverse_obj(obj, *paths, **kwargs):
"""
Safely traverse nested `dict`s and `Iterable`s
@ -6327,10 +6358,7 @@ def traverse_obj(obj, *paths, **kwargs):
if __debug__ and callable(key):
# Verify function signature
args = inspect.getargspec(key)
if len(args.args) != 2:
# crash differently in 2.6 !
inspect.getcallargs(key, None, None)
_try_bind_args(key, None, None)
new_objs = []
for obj in objs: