How to define this complex data type? Why can. to (str) solve this problem? 如何定义这种复杂的数据类型？为什么.to(str)能解决这个问题？

[NACXA0]

• Why must 'to.(str)' be added to 'value'? Otherwise, an error will be reported:
  • 'TypeError: Invalid var passed for prop TextFieldRoot.value, expected type str | int | float, got value item["test"] of type list[dict].'
• If var does not contain a 'list': [{'a ':'A'}] There is no such problem
• Why can't the value of input simply use item['test']?

class state(rx.State): var: list[dict[str, list[dict]]] = [ { 'test': 'test', 'list': [{'a': 'A'}] # It will cause some strange effects } ] def foreach_component(item: dict) -> rx.Component: return rx.el.input(value=item['test'].to(str)) # Only by adding. to(str) can it run here, why? def main() -> rx.Component: return rx.foreach(state.var, foreach_component)

中文:

• 为什么value必须加上to(str)？否则会报错：TypeError: Invalid var passed for prop TextFieldRoot.value, expected type str | int | float, got value item["test"] of type list[dict].
• 如果var不含 'list': [{'a': 'A'}] 就没有这个问题
• 为什么input的value不能只是简单地使用item['test']？

class state(rx.State):
var: list[dict[str, list[dict]]] = [
{
'test': 'test',
'list': [{'a': 'A'}] # 它会造成一些奇怪的影响
}
]
def foreach_component(item: dict) -> rx.Component:
return rx.el.input(value=item['test'].to(str)) # 这里只有加上.to(str)可以运行，为什么？
def main() -> rx.Component:
return rx.foreach(state.var, foreach_component)