code: def test_reset_index_tz(self, tz_aware_fixture):
      # GH 3950
      # reset_index with single level
      tz = tz_aware_fixture
      idx = date_range(
          "1/1/2011", periods=5, freq="D", tz=tz, name="idx"
      )
      df = DataFrame(
          {"a": range(5), "b": ["A", "B", "C", "D", "E"]}, index=idx
      )
  
      expected = DataFrame(
          {
              "idx": idx,
              "a": range(5),
              "b": ["A", "B", "C", "D", "E"],
          },
          columns=["idx", "a", "b"],
      )
      result = df.reset_index()
      tm.assert_frame_equal(result, expected)
  
imports: from datetime import datetime
  from itertools import product
  import numpy
  import pytest
  from pandas.core.dtypes.common import is_float_dtype, is_integer_dtype
  import pandas
  from pandas import Categorical, CategoricalIndex, DataFrame, Index, Interval, IntervalIndex, MultiIndex, RangeIndex, Series, Timestamp, cut, date_range
  import pandas._testing
label_desc: Use image node_id 4 for calling the TestResetIndex obj's underlying member method code with example usage: obj.test_reset_index_tz(tz_aware_fixture) without return types