code: def pd_ptp(df):
      return df.max() - df.min()
  
imports: from statsmodels.compat.pandas import PD_LT_2, Appender, is_numeric_dtype
  from statsmodels.compat.scipy import SP_LT_19
  from typing import Union
  from collections.abc import Sequence
  import numpy
  import pandas
  from scipy import stats
  from statsmodels.iolib.table import SimpleTable
  from statsmodels.stats.stattools import jarque_bera
  from statsmodels.tools.decorators import cache_readonly
  from statsmodels.tools.docstring import Docstring, Parameter
  from statsmodels.tools.validation import array_like, bool_like, float_like, int_like
label_desc: Use image node_id 1 for calling a global function with example usage: pd_ptp(df) and returns: unknown