text: """
  PyTorch integration.
  
  Importing this module registers the PyTorch backend with `phi.math`.
  Without this, PyTorch tensors cannot be handled by `phi.math` functions.
  
  To make PyTorch the default backend, import `phi.torch.flow`.
  """
  from phi import math as _math
  from ._torch_backend import TorchBackend as _TorchBackend
  
  TORCH = _TorchBackend()
  """ Backend for PyTorch operations. """
  
  _math.backend.BACKENDS.append(TORCH)
  
  __all__ = [key for key in globals().keys() if not key.startswith('_')]
  