code: def test_get_low_liquidity_transactions(self, expected, last_n_days):
      txn_daily = DataFrame(
          data=[
              [1, 1000000, 1, "A"],
              [2, 2000000, 1, "B"],
              [1, 1000000, 1, "A"],
          ],
          columns=["sid", "amount", "price", "symbol"],
          index=self.dates,
      )
  
      llt = get_low_liquidity_transactions(
          txn_daily, self.market_data, last_n_days=last_n_days
      )
      expected.index.name = "symbol"
      assert_frame_equal(llt, expected)
  
file_path: pyfolio/pyfolio/tests/test_capacity.py
imports: from __future__ import division
  from unittest import TestCase
  from nose_parameterized import parameterized
  from pandas import Series, DataFrame, date_range, datetime, concat
  from pandas.util.testing import assert_frame_equal, assert_series_equal
  from pyfolio.capacity import days_to_liquidate_positions, get_max_days_to_liquidate_by_ticker, get_low_liquidity_transactions, daily_txns_with_bar_data, apply_slippage_penalty
label_desc: Use image node_id 3 for calling the CapacityTestCase obj's underlying member method code with example usage: obj.test_get_low_liquidity_transactions(expected, last_n_days) without return types