code: def right_no_dup():
      return DataFrame(
          {
              "a": ["a", "b", "c", "d", "e"],
              "c": [
                  "meow",
                  "bark",
                  "um... weasel noise?",
                  "nay",
                  "chirp",
              ],
          },
          index=range(5),
      ).set_index("a")
  
imports: from datetime import datetime
  import numpy
  import pytest
  from pandas.errors import MergeError
  import pandas
  from pandas import DataFrame, Index, MultiIndex, date_range, period_range
  import pandas._testing
  from pandas.core.reshape.concat import concat
label_desc: Use image node_id 2 for calling a global function with example usage: right_no_dup() and returns: DataFrame