code: def test_frame_datetime64_duplicated():
      dates = date_range("2010-07-01", end="2010-08-05")
  
      tst = DataFrame({"symbol": "AAA", "date": dates})
      result = tst.duplicated(["date", "symbol"])
      assert (-result).all()
  
      tst = DataFrame({"date": dates})
      result = tst.date.duplicated()
      assert (-result).all()
  
file_path: pandas/pandas/tests/frame/methods/test_duplicated.py
imports: import re
  import sys
  import numpy
  import pytest
  from pandas import DataFrame, Series, date_range
  import pandas._testing
label_desc: Use image node_id 7 for calling a global function with example usage: test_frame_datetime64_duplicated() without return types