code: def education_df():
      return DataFrame(
          {
              "gender": [
                  "male",
                  "male",
                  "female",
                  "male",
                  "female",
                  "male",
              ],
              "education": [
                  "low",
                  "medium",
                  "high",
                  "low",
                  "high",
                  "low",
              ],
              "country": ["US", "FR", "US", "FR", "FR", "FR"],
          }
      )
  
imports: import numpy
  import pytest
  import pandas.util._test_decorators
  from pandas import Categorical, CategoricalIndex, DataFrame, Grouper, Index, MultiIndex, Series, date_range, to_datetime
  import pandas._testing
  from pandas.util.version import Version
label_desc: Use image node_id 9 for calling a global function with example usage: education_df() and returns: DataFrame