n_3  1000000 non-null  object
    dtypes: object(3)
    memory usage: 22.9+ MB

    >>> df.info(memory_usage='deep')
    <class 'pandas.core.frame.DataFrame'>
    RangeIndex: 1000000 entries, 0 to 999999
    Data columns (total 3 columns):
     #   Column    Non-Null Count    Dtype
    ---  ------    --------------    -----
     0   column_1  1000000 non-null  object
     1   column_2  1000000 non-null  object
     2   column_3  1000000 non-null  object
    dtypes: object(3)
    memory usage: 165.9 MBz”    DataFrame.describe: Generate descriptive statistics of DataFrame
        columns.
    DataFrame.memory_usage: Memory usage of DataFrame columns.r