code: def test_table_infer_float(self):
      data = {"a": [None, None, None, None, 1.0, 2.0]}
      tbl = Table(data)
      assert tbl.schema() == {"a": float}
  
imports: from datetime import date, datetime
  from perspective.table import Table
  from pytest import mark
label_desc: Use image node_id 2 for calling the TestTableInfer obj's underlying member method code with example usage: obj.test_table_infer_float() without return types