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 vote341 views1 answer
Rename files with spaces in a folder python
Python
0 vote345 views1 answer
Displace items in array python
Python
0 vote321 views1 answer
Pandas filter on range of values
Python
0 vote309 views1 answer
<ipython-input-31-da456dc89cda> in <module>
Python
0 vote309 views1 answer
Run python module from command line
Python
1 vote327 views1 answer
Findfont: Font family ['Times New Roman'] not found. Falling back to DejaVu Sans. findfont: Font family ['Times New Roman'] not found. Falling back to DejaVu Sans.
Python
0 vote312 views1 answer
Python get timestamp of today
Python
4 votes299 views1 answer
How to add condition if null value in django orm
Python
0 vote395 views1 answer
Recall calculate confusion matrix .ravel()
Python
1 vote311 views1 answer
Array and list in python
Python