perms.py

#!/usr/bin/env python
import fileinput

# from itertools import permutations


import itertools, operator

tmp = []
i = 0


def sort_uniq(sequence):
    return map(operator.itemgetter(0), itertools.groupby(sorted(sequence)))


def allequal(line):
    t = ""
    e = True
    for c in line:
        e = t == c
        t = c
    return e


def perms(tmp, i, s):
    s = itertools.permutations(s)
    for p in s:
        i += 1
        tmp.append("".join(p))
        if i == 20:
            tmp = sort_uniq(tmp)
            for p in tmp:
                print(p)
            tmp = []


for line in fileinput.input():
    try:
        line = line.replace("\n", "")
        if not allequal(line):
            perms(tmp, i, line.lower())
            perms(tmp, i, line)
            perms(tmp, i, line.upper())
        else:
            print(line)
    except:
        pass