Abstract
Apply is one of the most incorrectly used functions in pandas. Chances are if you are using it, you shouldn’t be. This is because Apply “applies” the function to each row or each column in the data set effectively breaking one of the cardinal rules of using pandas: do not iterate over the data set. In this chapter, we’ll explore when Apply is the right choice and present alternative solutions for when it’s not.
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© 2020 Hannah Stepanek
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Stepanek, H. (2020). The apply Method. In: Thinking in Pandas. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-5839-2_6
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DOI: https://doi.org/10.1007/978-1-4842-5839-2_6
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Publisher Name: Apress, Berkeley, CA
Print ISBN: 978-1-4842-5838-5
Online ISBN: 978-1-4842-5839-2
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