6. Sort by Custom Functions - Deepstash

6. Sort by Custom Functions

Apparently, the sorted data isn’t something that we expect — the months are not in the desired order. To make this happen, we can take advantage of the sort_method taking a key parameter, to which we can pass a custom function for sorting, just like Python’s built-in sorted function. A possible solution is shown below.

  • The key takes a callable, and we use a custom function here. Besides, this parameter is only available with pandas 1.1.0+.
  • Unlike the key parameter used in sorted() , the key function applies to each of the sorting columns in the sort_values method.


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