Apr 21, 2017 · I need to verify if a list is a subset of another - a boolean return is all I seek. Is testing equality on the smaller list after an intersection the fastest way to do this? Performance is of utm...

How to return a subset of a list that matches a condition [duplicate] Asked 9 years, 10 months ago Modified 2 years, 6 months ago Viewed 101k times

Oct 26, 2015 · creating a new list with subset of list using index in python Asked 12 years, 2 months ago Modified 2 years, 7 months ago Viewed 181k times

I have a big dictionary object that has several key value pairs (about 16), but I am only interested in 3 of them. What is the best way (shortest/efficient/most elegant) to subset such dictionary? ...

7 The different approaches discussed in the previous answers are based on the assumption that either the user knows column indices to drop or subset on, or the user wishes to subset a dataframe using …

Sep 12, 2018 · Subset a data frame based on index value [duplicate] Asked 7 years, 3 months ago Modified 7 years, 3 months ago Viewed 37k times

@X10D Asking what are the applications of a power set is a bit like asking what are the applications of subsets. It is a fundamental mathematical concept. What to use it for is up to you. I have used it for …

-2 With a complex class Myclass being a subclass of collections.UserDict. To select a subset of it, i.e keeping all its container properties, it's convenient to define a method, e.g. named sub like so:

I'm selecting several columns of a dataframe, by a list of the column names. This works fine if all elements of the list are in the dataframe. But if some elements of the list are not in the DataFr...

Jan 10, 2015 · User X 1 0 1 0 3 0 3 0 Is there a way to do this using the groupby function without grouping the data? I want the subset to include the individual observations.