Let’s say the number is 123.

Then the statement:

[int(''.join(x)) for x in permutations(list(str(123)))]

will create a sorted list of all possible numbers using ‘1’,’2′ and ‘3’.

which is, [123, 132, 213, 231, 312, 321]

### What it is doing

The part, **permutations(list(str(‘123’** is creating a permutated tuple list of splitted string ‘123’.

And the **int(”.join(x))** is converting each tuple to back to Integer.

However, you need to

import permutations from itertools

so, the generalized version would be:

import permutations from itertools [int(''.join(x)) for x in list(permutations(list(str(n))))]