Python combinations function

How to get all possible combinations in python

all_combinations = [list(zip(each_permutation, list2)) for each_permutation in itertools.permutations(list1, len(list2))]

Source: kite.com

Python permutation

import itertools

a = [1, 2, 3]
n = 3

perm_iterator = itertools.permutations(a, n)

for item in perm_iterator:
    print(item)

Combination python

# 1. Print all combinations 
from itertools import combinations

comb = combinations([1, 1, 3], 2)
print(list(combinations([1, 2, 3], 2)))
# Output: [(1, 2), (1, 3), (2, 3)]

# 2. Counting combinations
from math import comb
print(comb(10,3))
#Output: 120

Python combinations function

def combinations(iterable, r):
    pool = tuple(iterable)
    n = len(pool)
    for indices in permutations(range(n), r):
        if sorted(indices) == list(indices):
            yield tuple(pool[i] for i in indices)

Source: docs.python.org

Similar codes

0 vote188 views1 answer
How to check if a list raises IndexError but wihing a if statement python
Python
1 vote155 views1 answer
Procfile for flask app
Python
16 votes212 views3 answers
Python empty text file
Python
1 vote242 views1 answer
How to open a software using python
Python
8 votes193 views2 answers
Pandas lambda if else
Python
2 votes184 views1 answer
Is pythin a real coding language
Python
11 votes194 views6 answers
Python get file size
Python
0 vote186 views2 answers
Def check_zip_code(text): result = re.search(r'\d{5}(?:-\d{4})?', text) return result != None
Python
0 vote192 views1 answer
How to view back of list in python
Python
0 vote183 views1 answer
Instabot login python
Python