code: def test_groupby_count_dateparseerror(self):
      dr = date_range(start="1/1/2012", freq="5min", periods=10)
  
      # BAD Example, datetimes first
      ser = Series(np.arange(10), index=[dr, np.arange(10)])
      grouped = ser.groupby(lambda x: x[1] % 2 == 0)
      result = grouped.count()
  
      ser = Series(np.arange(10), index=[np.arange(10), dr])
      grouped = ser.groupby(lambda x: x[0] % 2 == 0)
      expected = grouped.count()
  
      tm.assert_series_equal(result, expected)
  
imports: from itertools import product
  from string import ascii_lowercase
  import numpy
  import pytest
  from pandas import DataFrame, Index, MultiIndex, Period, Series, Timedelta, Timestamp, date_range
  import pandas._testing
label_desc: Use image node_id 21 for calling the TestCounting obj's underlying member method code with example usage: obj.test_groupby_count_dateparseerror() without return types