code: def pyunit_asnumeric_string():
      small_test = [
          pyunit_utils.locate(
              "bigdata/laptop/lending-club/LoanStats3a.csv"
          )
      ]
  
      print("Import and Parse data")
      types = {
          "int_rate": "string",
          "revol_util": "string",
          "emp_length": "string",
      }
  
      data = h2o.import_file(path=small_test, col_types=types)
      assert (
          data["int_rate"].gsub("%", "").trim().asnumeric().isna().sum()
          == 3
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: pyunit_asnumeric_string() without return types