docstr: Set state value.
docstr_tok: ["Set","state","value","."]
code: def __setitem__(self, item, value):
      """Set state value."""
      self._state["data"][item] = value
  
file_path: promptsource/promptsource/session.py
imports: from streamlit.hashing import _CodeHasher
  from streamlit.report_thread import get_report_ctx
  from streamlit.server.server import Server
label_desc: Use image node_id 5 for calling the _SessionState obj's underlying member method code with example usage: obj.__setitem__(item, value) without return types