code: def test_single_mismatch():
      # Arrange
      data = {
          "col1": [
              "Deep",
              "deep",
              "deep!!!",
              "$deeP$",
              "earth",
              "foo",
              "bar",
              "dog",
          ]
      }
      df = pd.DataFrame(data=data)
      # Act
      result = StringMismatch().run(df).value
      # Assert
      assert_that(
          result["columns"],
          has_entry("col1", has_entry("deep", has_length(4))),
      )
  
imports: import numpy
  import pandas
  from hamcrest import assert_that, close_to, greater_than, has_entries, has_entry, has_items, has_length
  from deepchecks.core import ConditionCategory
  from deepchecks.tabular.checks.data_integrity import StringMismatch
  from deepchecks.tabular.dataset import Dataset
  from tests.base.utils import equal_condition_result
label_desc: Use image node_id 3 for calling a global function with example usage: test_single_mismatch() without return types