old_contents: try:
      from pipeline.component.nn.backend.fate_torch.import_hook import fate_torch_hook
      from pipeline.component.nn.backend import fate_torch
  except:
      fate_torch_hook, fate_torch = None, None
  
  __all__ = ['fate_torch_hook', 'fate_torch']
  
new_contents: try:
      from pipeline.component.nn.backend.fate_torch.import_hook import fate_torch_hook
      from pipeline.component.nn.backend import fate_torch
  except ImportError:
      fate_torch_hook, fate_torch = None, None
  except ValueError:
      fate_torch_hook, fate_torch = None, None
  
  __all__ = ['fate_torch_hook', 'fate_torch']
  
subject: fix fate client import