code: def replace_nones(list_, repl=-1):
      r
      repl_list = [
          repl if item is None else (
              replace_nones(item, repl) if isinstance(item, list) else item
          )
          for item in list_
      ]
      return repl_list
docs: r"""
      Recursively removes Nones in all lists and sublists and replaces them with
      the repl variable
  
      Args:
          list_ (list):
          repl (obj): replacement value
  
      Returns:
          list
  
      CommandLine:
          python -m utool.util_list --test-replace_nones
  
      Example:
          >>> # ENABLE_DOCTEST
          >>> from utool.util_list import *  # NOQA
          >>> # build test data
          >>> list_ = [None, 0, 1, 2]
          >>> repl = -1
          >>> # execute function
          >>> repl_list = replace_nones(list_, repl)
          >>> # verify results
          >>> result = str(repl_list)
          >>> print(result)
          [-1, 0, 1, 2]