Python permutation

All permutations python

import itertools
print(list(itertools.permutations([1,2,3])))

Python permutation

import itertools

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

perm_iterator = itertools.permutations(a, n)

for item in perm_iterator:
    print(item)

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

Permutation python

def permutations(s):
    if len(s) <= 1: 
        yield s
    else:
        for i in range(len(s)):
            for p in permutations(s[:i] + s[i+1:]):
                yield s[i] + p
        
input = 'ABCD'

for permutation in enumerate(permutations(input)):
    print repr(permutation[1]),
print

Similar codes

0 vote144 views1 answer
How to get ouput from python?
Python
0 vote123 views1 answer
Python while loop
Python
6 votes152 views2 answers
How to change background of tkinter window
Python
3 votes135 views3 answers
How to take matrix input in python
Python
5 votes161 views3 answers
Text to binary python
Python
0 vote134 views3 answers
Python every other goes to a list
Python
0 vote144 views1 answer
Python extract all characters from string before a character
Python
2 votes124 views1 answer
Python merge strings in columns
Python
4 votes133 views3 answers
How to create a list from csv python
Python
0 vote131 views1 answer
Como usar o Self no python
Python