class_docstr: A stateless singleton that proxies ``st.query_params`` interactions
  to the current script thread's QueryParams instance.
class_docstr_tok: ["A","stateless","singleton","that","proxies","``","st.query_params","``","interactions","to","the","current","script","thread","'s","QueryParams","instance","."]
code: def __delitem__(self, key: str) -> None:
      with get_session_state().query_params() as qp:
          del qp[key]
  
file_path: streamlit/lib/streamlit/runtime/state/query_params_proxy.py
imports: from typing import Dict, Iterable, Iterator, List, MutableMapping, Union
  from streamlit.runtime.metrics_util import gather_metrics
  from streamlit.runtime.state.query_params import missing_key_error_message
  from streamlit.runtime.state.session_state_proxy import get_session_state
label_desc: Use image node_id 4 for calling the QueryParamsProxy obj's underlying member method code with example usage: obj.__delitem__(key) without return types