code: def get_device_from_name(device_name=""):
      """
      Get a Torch device based on the specified device name or default behavior.
  
      This function returns a Torch device based on the specified device name or the
      default behavior, which is to return the output of the 'get_devices()' function.
  
      Args:
          device_name (str, optional): Name of the device to use. Default is an empty
          string.
  
      Returns:
          torch.device: The selected Torch device.
  
      Example:
          >>> device = get_device_from_name('cuda:1')
          >>> print(device)
          cuda:1
      """  # noqa E501
      if device_name != "":
          device = torch.device(device_name)
      else:
          device, _ = get_devices()
      return device
  
imports: import torch
  import os
  from random import randint
  from torch.cuda import device_count, get_device_capability
label_desc: Use image node_id 3 for calling a global function with example usage: get_device_from_name(device_name) and returns: device