# src.hersteller.data_processing.pipeline_operations.py
```{eval-rst}
.. autoclass :: hersteller.data_processing.pipeline_operations.ColumnDropper
    :show-inheritance:
    :members: fit, transform

.. autoclass :: hersteller.data_processing.pipeline_operations.ColumnTypeSetter
    :show-inheritance:
    :members: fit, transform

.. autoclass :: hersteller.data_processing.pipeline_operations.OneHotEncodePd
    :show-inheritance:
    :members: fit, transform
    
.. autoclass :: hersteller.data_processing.pipeline_operations.MultiOneHotEncodePd
    :show-inheritance:
    :members: fit, transform

.. autoclass :: hersteller.data_processing.pipeline_operations.NormalizeCols
    :show-inheritance:
    :members: fit, transform
    
```