I have a piece of code here that is supposed to return the least common element in a list of elements, ordered by commonality: def getSingle(arr): from collections import Counter c = …

The first, [:], is creating a slice (normally often used for getting just part of a list), which happens to contain the entire list, and thus is effectively a copy of the list. The second, list(), is using the …

Oct 5, 2017 · Let summarize the differences between List.of and Arrays.asList List.of can be best used when data set is less and unchanged, while Arrays.asList can be used best in case of …

In Google Maps, you can create a list of places, like your favorite places or places you want to visit. Make a new list On your Android phone or tablet, open the Google Maps app

Since a list comprehension creates a list, it shouldn't be used if creating a list is not the goal; it shouldn't be used simply to write a one-line for-loop; so refrain from writing [print(x) for x in …

Given a dataframe, I want to groupby the first column and get second column as lists in rows, so that a dataframe like: a b A 1 A 2 B 5 B 5 B 4 C 6 becomes A [1,2] B [5,5,4] C [6] How do I do …

Apr 4, 2009 · Closed 9 years ago. Is the a short syntax for joining a list of lists into a single list ( or iterator) in python? For example I have a list as follows and I want to iterate over a,b and c.

Sep 20, 2010 · What is the syntax to insert one list into another list in python? [duplicate] Asked 15 years, 1 month ago Modified 6 years, 5 months ago Viewed 350k times

The reason you're getting the unhashable type: 'list' exception is because k = list[0:j] sets k to be a "slice" of the list, which is logically another, often shorter, list.

Oct 5, 2017 · But collect_list doesn't guarantee order even if I sort the input data frame by date before aggregation. Could someone help on how to do aggregation by preserving the order …