code: def _lexograph_lt(a1, a2):
      """
      Compare two 1D numpy arrays lexographically
      Parameters
      ----------
      a1: ndarray
          1D numpy array
      a2: ndarray
          1D numpy array
  
      Returns
      -------
      comparison:
          True if a1 < a2, False otherwise
      """
      for e1, e2 in zip(a1, a2):
          if e1 < e2:
              return True
          elif e1 > e2:
              return False
      return len(a1) < len(a2)
  
imports: from __future__ import annotations
  import re
  from functools import total_ordering
  from packaging.version import Version
  import numpy
  import pandas
  from numba import jit
  from pandas.api.extensions import ExtensionDtype, ExtensionArray, register_extension_dtype
  from numbers import Integral
  from pandas.api.types import pandas_dtype, is_extension_array_dtype
label_desc: Use image node_id 7 for calling a global function with example usage: _lexograph_lt(a1, a2) and returns: unknown, True, False