code: def asstr2(s):
      if isinstance(s, str):
          return s
      elif isinstance(s, bytes):
          return s.decode("latin1")
      else:
          return str(s)
  
imports: import numpy
  import pandas
  import scipy.linalg
  from statsmodels.tools.data import _is_using_pandas
  from statsmodels.tools.validation import array_like
label_desc: Use image node_id 1 for calling a global function with example usage: asstr2(s) and returns: s, s, str