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In our case, lst is sorted by the third column. We have to pass the iterator of that specific row (1D vector) to sort(). In the above code at key=lambda lst:lst, the lst defines which column should be used for the sort basis. It is very easy to sort a specific row of a 2D vector by using a sort() function. It is possible to do this strategy quickly because the key function is called just once for each input record.Ī frequently used pattern is to sort complex objects using one or more of the object’s indices as a key. Output:, , ]įor sorting reasons, the key parameter should be set to the value of a function that accepts a single argument and returns a key that may be used in the sorting process. Create A Custom Sort Order For Your Excel PIVOT TABLE lst = [