## Combinations of all dataframe columns in python

I have three data frames that have the same index (Countries). I need to find all the combinations of the three data frames, create new columns with the data frames. Under each of those columns I will …

## How to create a list from a dict of lists that has combinations of the array elements [closed]

The question might have been worded confusingly so here I will try to make it more clear. Suppose I have a dict like x = {0: [(36, 44)], 1: [(38, 39), (38, 40), (39, 40)], 2: [(37, 41), (37, 42), (41, …

## Combination of rows in numpy.ndarray

I have the following numpy.ndarray I want to find all the possible combinations of sum of each row (sum of individual elements of a row except the last column) of S[0,:,:] with each row of S[1,:,:], i.e., my desired result is (order does not matter): which is a 9-by-2 array resulting from 9 possible combinations of S[0,:,:] and S[1,:,:]. Although I have used a particular shape of S here, the shape may vary, i.e., for in the above problem, x=2, y=3, and z=3, but these values may vary. Therefore, I am seeking for a generalized version. Your help will be

## Removing Brackets from itertools combination list results

I have this code The output is: I want to remove the brackets and speech marks from the output. How can I achieve that? so that my output would be: Answer You can accomplish this in the following way (without using str.join): This should have the added benefit of avoiding the creation of intermediate strings in the join.

## Google Foobar Challenge 3 – Find the Access Codes

Find the Access Codes Write a function answer(l) that takes a list of positive integers l and counts the number of “lucky triples” of (lst[i], lst[j], lst[k]) where i < j < k. The length of l …

## Python regex iteration for all combinations

I am new to regex. I am using Python 2.7 and BeautifulSoup4. I want to iterate over a particular regular expression. Required ouput : length : 5 , expression : [a-zA-Z0-9!&#%@] It should …