code: def test_is_single_integer():
      assert ia.is_single_integer("A") is False
      assert ia.is_single_integer(None) is False
      assert ia.is_single_integer(1.2) is False
      assert ia.is_single_integer(1.0) is False
      assert (
          ia.is_single_integer(np.ones((1,), dtype=np.float32)[0])
          is False
      )
      assert ia.is_single_integer(1) is True
      assert ia.is_single_integer(1234) is True
      assert (
          ia.is_single_integer(np.ones((1,), dtype=np.uint8)[0]) is True
      )
      assert (
          ia.is_single_integer(np.ones((1,), dtype=np.int32)[0]) is True
      )
  
imports: from __future__ import print_function, division, absolute_import
  import time
  import warnings
  import sys
  import matplotlib
  import numpy
  import six.moves
  import cv2
  import imgaug
  from imgaug import dtypes
  import imgaug.random
  from imgaug.testutils import assertWarns
label_desc: Use image node_id 3 for calling a global function with example usage: test_is_single_integer() without return types