wrappers: dict
theme: dict

__init__(self, items, base_name=None, open=False, **attrs): 

LLM Docstring

A collapsible opener (a simpler, single-level accordion-style disclosure).

• items: Any

  the {label: content} items

• base_name: Any

  the id prefix

• open: bool

  start expanded

• attrs: Any

  extra attributes

create_item(self, item, open=None, **kw): 

LLM Docstring

Build an opener item (header plus collapsible body).

• item: Any

  the item spec

• open: Any

  start expanded

• kw: Any

  extra options

• :returns: _

  the item element