All Questions
8 questions
0
votes
2
answers
118
views
Comparing Columns , Arrays, List using SQL, Numpy or Python List. Would Intertools be valid alternative and faster?
I have two table in SQL
tModel which has 9 columns (ID, Date N1, N2, N3, N4, N5, N6, Flag) and 300 million rows
tPairAP which has 3 columns (ID, N1, N2) and 750 rows
The task I need to to perform is ...
- 327
1
vote
2
answers
66
views
How to group items in list in python if the value change? [duplicate]
Suppose I have a list
msg_type =["sent-message", "received-message", "received-message", "sent-message", "received-message", "sent-message", ...
- 166
0
votes
2
answers
312
views
Python itertools.combinations: how to obtain the indices of the combined numbers within the combinations at the same time
According to the question presented here: Python itertools.combinations: how to obtain the indices of the combined numbers, given the following code:
import itertools
my_list = [7, 5, 5, 4]
pairs = ...
- 734
4
votes
5
answers
136
views
Python | How to group value to different lists from a main list given a certain range of number for each index
OGlist = [A, B, C, D, E, 1, 2, 3, 4, 5, F, G, H, I, J, 6, 7, 8, 9, 10]
_list = []
_list2 = []
So, I have a list OGlist... I want the first 5 elements of the OGlist into _list , the second 5 elements ...
user12601274
3
votes
2
answers
1k
views
Grouping the nearest elements from a list in terms of difference
I have a list below:
tst = [1,3,4,6,8,22,24,25,26,67,68,70,72]
I want to group the elements from above list into separate groups/lists based on the difference between the consecutive elements in the ...
2
votes
4
answers
1k
views
repeating a numpy array a specified number of times for itertools
I am trying to write some code that will give me the itertools product, for a varying number of inputs. For example, this works for me.
test = np.array([x for x in itertools.product([0,2],[0,2],[0,2])...
- 748
0
votes
2
answers
71
views
using python.itertools to sum slots across multiple lists
I have this:
[
[ [1,1,1,0,0,0,0], [0,1,2,3,4,5,6], [1,2,3,4,5,6,7], [2,3,4,5,6,7,8], [3,4,5,6,7,8,9], [4,5,6,7,8,9,0] ]
, [ [2,2,2,0,0,0,0], [0,1,2,3,4,5,6], [1,2,3,4,5,6,7], [2,3,4,5,6,7,8],...
- 776
-3
votes
1
answer
141
views
Python: 2-item combinations from list of lists containing 1 or more items [closed]
I want to find all 2-item combinations from a list of lists. The inner lists contain one or more items, and I don't want to include combinations of items within the same inner list (unless that ...
- 2,230