code: def mkts(size, dtstart="1911-11-01", ff="D"):
      return pd.DataFrame(
          np.random.random(size),
          index=pd.date_range(dtstart, freq=ff, periods=size[0]),
      )
  
file_path: tslumen/tests/unit/profile/base.py
imports: from datetime import datetime
  from dataclasses import is_dataclass
  import numpy
  import pandas
  from tslumen.profile.base import ProfileResult, ProfilingFunction
label_desc: Use image node_id 2 for calling a global function with example usage: mkts(size, dtstart, ff) and returns: pd