# -*- coding: utf-8 -*-

def countChars(chars, text):
    n = 0
    for char in text:
        if char in chars or char in chars.upper():
            n += 1
    return n

text = u"Текст, в кОТОРом будЕм считатЬ гласные И соГЛАсные"
g = countChars(u"аеёиоуыэюя", text)
s = countChars(u"бвгджзклмнпрстфхцчшщ", text)

print u"гласных: %i, согласных: %i" % (g, s)

# -*- coding: utf-8 -*-

CONS = u"бвгджзклмнпрстфхцчшщ"
VOV = u"аеёиоуыэюя"
text = u'Мама мыла раму'

cons = sum(1 for t in text.lower() if t in CONS)
vov = sum(1 for t in text.lower() if t in VOV)

print cons, vov

>>> lst = ["bbaa", "bbbb", "abe", "defdefdef", "ab"]
>>> lst.sort(key=lambda i: sum(ltr in "bcdfghjklmnpqrstvwxz" for ltr in i))
>>> print(lst)
['abe', 'ab', 'bbaa', 'bbbb', 'defdefdef']
>>>