input: Write a python function to select days with high temperature from a given CSV file.
  assert high_temp_days('Oregon_OregonState_97_02.csv') == high_temp_days_expected_result # Replace with actual expected result
  assert high_temp_days('another_file.csv') == another_expected_result # Replace with actual expected result
output: import csv
  
  def high_temp_days(file_name):
      high_temp_days_list = []
      with open(file_name, mode='r') as file:
          csv_reader = csv.DictReader(file)
          for row in csv_reader:
              if int(row['TMAX']) > 85:  # Assuming 'TMAX' column contains maximum temperatures
                  high_temp_days_list.append(row['DATE'])
      return high_temp_days_list