listFilterBySimmilar

import sys
pyt_path = r'C:\Program Files (x86)\IronPython 2.7\Lib'
sys.path.append(pyt_path)
import random

list1 = []
list2 = []
listLen_1 = random.randint(0,10)
listLen_2 = random.randint(0,10)
list1 = [random.randint(0,10) for r in xrange(listLen_1)]
list2 = [random.randint(0,10) for r in xrange(listLen_2)]


outlist = []
#Найдем днинный список и первый цикл организовываем по длинному списку
if len(list1) >= len(list2):
    longList = list1
    shortList = list2
else:
    longList = list2
    shortList = list1


for i in longList:
    checkList = False
    for j in shortList:
        if i == j and i not in outlist: #проверка на дубликаты
            checkList = i
            break
    outlist.append(checkList)

OUT = outlist, list1, list2