def _path_hooks(cls, path): # from importlib.PathFinder
"""Search sys.path_hooks for a finder for 'path'."""
if sys.path_hooks is not None and not sys.path_hooks:
warnings.warn('sys.path_hooks is empty', ImportWarning)
for hook in sys.path_hooks:
try:
return hook(path)
except ImportError:
continue
else:
return None
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