docstr: Method to set the state of the list and its children.
docstr_tok: ["Method","to","set","the","state","of","the","list","and","its","children","."]
code: def set_state(self, state):
      """Method to set the state of the list and its children."""
      from lightning.app.core import LightningFlow, LightningWork
  
      works = [item for item in self if isinstance(item, LightningWork)]
      children = [
          item for item in self if isinstance(item, LightningFlow)
      ]
  
      current_state_keys = {_prepare_name(w) for w in self}
      state_keys = set(
          list(state["works"].keys()) + list(state["flows"].keys())
      )
  
      if current_state_keys != state_keys:
          key_diff = (current_state_keys - state_keys) | (
              state_keys - current_state_keys
          )
          raise Exception(
              f"The provided state doesn't match the `List` {self.name}. Found `{key_diff}` un-matching keys"
          )
  
      for work_key, work_state in state["works"].items():
          for work in works:
              if _prepare_name(work) == work_key:
                  work.set_state(work_state)
      for child_key, child_state in state["flows"].items():
          for child in children:
              if _prepare_name(child) == child_key:
                  child.set_state(child_state)
  
file_path: pytorch-lightning/src/lightning/app/structures/list.py
imports: import typing
  from lightning.app.utilities.app_helpers import _LightningAppRef, _set_child_name
label_desc: Use image node_id 9 for calling the List obj's underlying member method code with example usage: obj.set_state(state) without return types