Method __new__

Lib/ast.py:587–588

(cls, dims=(), **kwargs)

class ExtSlice(slice):
    """Deprecated AST node class. Use ast.Tuple instead."""
    def __new__(cls, dims=(), **kwargs):
        return Tuple(list(dims), Load(), **kwargs)

# If the ast module is loaded more than once, only add deprecated methods once
if not hasattr(Tuple, 'dims'):