code: def test_index_from_index(self):
      pidx = pd.Index([1, 2, 3], name="a")
      psidx = ps.from_pandas(pidx)
  
      self.assert_eq(ps.Index(psidx), pd.Index(pidx))
      self.assert_eq(
          ps.Index(psidx, dtype="float"), pd.Index(pidx, dtype="float")
      )
      self.assert_eq(
          ps.Index(psidx, name="x"), pd.Index(pidx, name="x")
      )
      self.assert_eq(
          ps.Index(psidx, copy=True), pd.Index(pidx, copy=True)
      )
  
      self.assert_eq(
          ps.Index(psidx, dtype="int64"), pd.Index(pidx, dtype="int64")
      )
      self.assert_eq(
          ps.Index(psidx, dtype="float64"),
          pd.Index(pidx, dtype="float64"),
      )
  
      pidx = pd.DatetimeIndex(["2021-03-01", "2021-03-02"])
      psidx = ps.from_pandas(pidx)
  
      self.assert_eq(ps.Index(psidx), pd.Index(pidx))
      self.assert_eq(ps.DatetimeIndex(psidx), pd.DatetimeIndex(pidx))
  
imports: import unittest
  from datetime import datetime
  import pandas
  from pyspark import pandas
  from pyspark.loose_version import LooseVersion
  from pyspark.testing.pandasutils import PandasOnSparkTestCase, SPARK_CONF_ARROW_ENABLED
  from pyspark.testing.sqlutils import SQLTestUtils
label_desc: Use image node_id 4 for calling the ConversionMixin obj's underlying member method code with example usage: obj.test_index_from_index() without return types