All Questions
5 questions
0
votes
2
answers
114
views
Create lists with 3 levels, containing every combination of sub list(s) values
I am currently stuck with the following problem (I could not find solution already on here that really fitted this):
I have three lists a = [a, b, c], b = [1, 2, 3] and c = [0.1, 0.2, 0.3].
I would ...
- 11
2
votes
1
answer
3k
views
How to produce permutations with replacement in Python
I am trying to write some code (as part of a larger script) to develop numpy arrays of length n, which I can use to change the sign of an input list of length n, in all possible ways.
I am trying to ...
- 23
13
votes
3
answers
7k
views
Faster numpy-solution instead of itertools.combinations?
I'm using itertools.combinations() as follows:
import itertools
import numpy as np
L = [1,2,3,4,5]
N = 3
output = np.array([a for a in itertools.combinations(L,N)]).T
Which yields me the output I ...
- 3,212
1
vote
1
answer
535
views
Generate all polynomial terms of certain degree
Having list of n terms
ts = ['t1','t2','t3',...,'tn']
there is a task to achieve all possible q-length combinations of this terms.
Thus, for
ts = ['t1','t2']
q = 4
the answer will be
[['t1','t1','...
- 6,651
-1
votes
1
answer
66
views
Combinations of chars via a generator in Python
I am trying to get all the combinations with replacement (in other words, the cartesian product) of strings with length(8) . The output is too big and I am having trouble storing it in memory all at ...
- 332