code: def pyunit_ischaracter_isnumeric():
      iris = h2o.import_file(
          pyunit_utils.locate("smalldata/iris/iris.csv")
      )
      assert iris[0].isnumeric()[
          0
      ], "Expected the first column of iris to be numeric"
      assert not iris[0].ischaracter()[
          0
      ], "Expected the first column of iris to be numeric"
      assert not iris[4].isnumeric()[
          0
      ], "Expected the last column of iris to be character"
      iris[4] = iris[4].ascharacter()
      assert iris[4].isstring()[
          0
      ], "Expected the last column of iris to be a string"
  
imports: import sys
  import h2o
  from tests import pyunit_utils
  import random
label_desc: Use image node_id 1 for calling a global function with example usage: pyunit_ischaracter_isnumeric() without return types