(f, x)
return x
Fold the function f to the nested structure x (dicts, tuples, lists).
Fold the function f to the nested structure x (dicts, tuples, lists).
Fold the function f to the nested structure x ( dicts tuples lists ) .
def _nested_reduce(f, x):
  """Fold the function f to the nested structure x (dicts, tuples, lists)."""
  if isinstance(x, list):
    return f([_nested_reduce(f, y) for y in x])
  if isinstance(x, tuple):
    return f([_nested_reduce(f, y) for y in x])
  if isinstance(x, dict):
    return f([_nested_reduce(f, v) for (_, v) in x.items()])
  return x
def _nested_reduce ( f , x ) : if isinstance ( x , list ) : return f ( [ _nested_reduce ( f , y ) for y in x ] ) if isinstance ( x , tuple ) : return f ( [ _nested_reduce ( f , y ) for y in x ] ) if isinstance ( x , dict ) : return f ( [ _nested_reduce ( f , v ) for ( _ , v ) in x . items ( ) ] ) return x