docstr: Display the current sparsity level.
          
docstr_tok: ["Display","the","current","sparsity","level","."]
code: def print_sl(self, is_verbose, group, sl, epoch=None):
      """Display the current sparsity level."""
      if is_verbose:
          if epoch is None:
              print(
                  f"Adjusting sparsity level of group {group} to {sl:.4e}."
              )
          else:
              print(
                  f"Epoch {epoch:5d}: adjusting sparsity level of group {group} to {sl:.4e}."
              )
  
file_path: pytorch/torch/ao/pruning/scheduler/base_scheduler.py
imports: from torch.ao.pruning import BaseSparsifier
  from functools import wraps
  import warnings
  import weakref
label_desc: Use image node_id 6 for calling the BaseScheduler obj's underlying member method code with example usage: obj.print_sl(is_verbose, group, sl, epoch) without return types