code: def test_map_float_object_conversion(val):
      # GH 2909: object conversion to float in constructor?
      df = DataFrame(data=[val, "a"])
      result = df.map(lambda x: x).dtypes[0]
      assert result == object
  
imports: from datetime import datetime
  import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Series, Timestamp, date_range
  import pandas._testing
  from pandas.tseries.offsets import BDay
label_desc: Use image node_id 2 for calling a global function with example usage: test_map_float_object_conversion(val) without return types