code: def save_andor_load_arrays(
      endog, exog, true_params, save_arrays, load_old_arrays
  ):
      if save_arrays:
          sp.save("endog.npy", endog)
          sp.save("exog.npy", exog)
          sp.save("true_params.npy", true_params)
      if load_old_arrays:
          endog = sp.load("endog.npy")
          exog = sp.load("exog.npy")
          true_params = sp.load("true_params.npy")
      return endog, exog, true_params
  
file_path: statsmodels/statsmodels/examples/l1_demo/demo.py
imports: from optparse import OptionParser
  import statsmodels.api
  import scipy
  from scipy import linalg
  from scipy import stats
label_desc: Use image node_id 5 for calling a global function with example usage: save_andor_load_arrays(endog, exog, true_params, save_arrays, load_old_arrays) and returns: endog,  exog,  true_params