code: def _(x):
      return "s"
  
file_path: dask/dask/dataframe/_dtypes.py
imports: from __future__ import annotations
  from datetime import date, time
  from decimal import Decimal
  import pandas
  from dask.dataframe._compat import PANDAS_GE_150
  from dask.dataframe.extensions import make_array_nonempty, make_scalar
label_desc: Use image node_id 4 for calling a global function with example usage: _(x) and returns: str