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10. Data wrangling
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.. toctree::
   :maxdepth: 1

   The essential parts of a data frame <essential_parts_of_df.ipynb>
   Using data frame indexes <dataframe_indexes.ipynb>
   Manipulating and wrangling data frames <manipulating_dataframes_intro.ipynb>
   Merging and concatenating data frames <merging_dataframes.ipynb>
   Melting a data frame <melting.ipynb>
   Stacking and unstacking data frames <stacking_and_unstacking.ipynb>
   Styling data frames <styling_data_frames.ipynb>