code: def test_with_mixed_tuples(self, sort):
      # 10697
      # columns have mixed tuples, so handle properly
      df1 = DataFrame({"A": "foo", ("B", 1): "bar"}, index=range(2))
      df2 = DataFrame({"B": "foo", ("B", 1): "bar"}, index=range(2))
  
      # it works
      concat([df1, df2], sort=sort)
  
imports: from collections import abc, deque
  from collections.abc import Iterator
  from datetime import datetime
  from decimal import Decimal
  import numpy
  import pytest
  from pandas.errors import InvalidIndexError
  import pandas
  from pandas import DataFrame, Index, MultiIndex, PeriodIndex, Series, concat, date_range
  import pandas._testing
  from pandas.core.arrays import SparseArray
  from pandas.tests.extension.decimal import to_decimal
label_desc: Use image node_id 9 for calling the TestConcatenate obj's underlying member method code with example usage: obj.test_with_mixed_tuples(sort) without return types