Python-сообщество

slovo = '0'
arr = []
marr = []
bukva = [u'w']
while slovo != '':
    slovo = raw_input(u'Введите слово: ').decode('cp1251')
    for b in slovo:
        if b in bukva: 
            arr.append(slovo)
        else:
            marr.append(slovo)

slovo = '0'
arr = []
marr = []
bukva = [u'w']
while True:
    slovo = raw_input(u'Введите слово: ').decode('cp1251')
    if not slovo: break
    list_append = marr
    for chr_ in slovo:
        if chr_ in bukva:
            list_append = arr
            break
    list_append.append(slovo)

slovo = '0'
arr = []
marr = []
bukva = [u'w']
while True:
    slovo = raw_input(u'Введите слово: ').decode('cp1251')
    if not slovo: break
    list_append = marr
    for chr_ in bukva:
        if chr_ in slovo:
            list_append = arr
            break
    list_append.append(slovo)

>>> letters = set('abcd')
>>> 
>>> arr, narr = [], []
>>> for word in 'cccx', 'zzzzz', 'zzzaz', 'xxdxdxx', 'x':
...     if set(word) & letters:
...         arr.append(word)
...     else:
...         narr.append(word)
... 
>>> arr
['cccx', 'zzzaz', 'xxdxdxx']
>>> narr
['zzzzz', 'x']
>>>

>>> bukva = ['a', 'b']
>>> any(x in 'az' for x in bukva)
True
>>> any(x in 'yz' for x in bukva)
False
>>> any(x in 'bz' for x in bukva)
True