code: def plot_Stepplot():
      df = df_parabula_cube()
      return df.plot_bokeh.step(
          x="x",
          xticks=range(-1, 1),
          colormap=["#009933", "#ff3399"],
          title="Pointplot (Parabula vs. Cube)",
          mode="after",
          figsize=(800, 300),
          show_figure=False,
      )
  
imports: import inspect
  import os
  import re
  from functools import wraps
  from pathlib import Path
  from shutil import rmtree
  from typing import Callable
  import numpy
  import pandas
  import pandas_bokeh
label_desc: Use image node_id 13 for calling a global function with example usage: plot_Stepplot() and returns: df