code: def __init__(self, default):
      self.default = default
  
imports: from collections import defaultdict
  from multipledispatch.dispatcher import Dispatcher, expand_tuples
  from funsor.typing import Variadic, deep_type, get_origin, get_type_hints, typing_wrap
label_desc: Use image node_id 1 to create a new PartialDefault object  with example: obj = PartialDefault(default)