code: def tensor(data, dtype=np.float64, device=None, device_id=None):
      if isinstance(data, tf.Tensor) or isinstance(data, tf.Variable):
          return tf.cast(data, dtype=dtype)
  
      out = tf.Variable(data, dtype=dtype)
      return out.gpu(device_id) if device == "gpu" else out
  
file_path: tensorly/tensorly/backend/tensorflow_backend.py
imports: import numpy
  from .core import Backend, backend_types, backend_basic_math, backend_array
label_desc: Use image node_id 2 for calling the TensorflowBackend obj's underlying member method code with example usage: obj.tensor(data, dtype, device, device_id) and returns: unknown, tf