Permutations in python

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 all permutations of a string

>>> from itertools import permutations
>>> perms = [''.join(p) for p in permutations('stack')]
>>> perms

Source: stackoverflow.com

Import permutations

from itertools import permutations

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

Permutations in python

T=[i for i in range(8)]
for i in range(8):
             print("T[",i,"]= ",end="")
             T[i]=int(input())
print("Tableau avant permutation")
print(T)
k=7
for i in range(4):
             X=T[i]
             T[i]=T[k]
             T[k]=X
             k=k-1
print("Tableau après permutation")
print(T)

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