Pandas Cookbook

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Passing a long list inside the indexing operator might cause readability issues. To help with this, you may save all your column names to a list variable first. The following code achieves the same result as step 1:

>>> cols = ['actor_1_name', 'actor_2_name',            'actor_3_name', 'director_name']>>> movie_actor_director = movie[cols]

One of the most common exceptions raised when working with pandas is KeyError. This error is mainly due to mistyping of a column or index name. This same error is raised whenever a multiple column selection is attempted without the use of a list:

>>> movie['actor_1_name', 'actor_2_name',          'actor_3_name', 'director_name']KeyError: ('actor_1_name', 'actor_2_name',           'actor_3_name', 'director_name')

This ...