>>> import re
>>> s = """ou may wish to load the Maps API JavaScript code after your page has finished loading, or on demand. To do so, you can inject your own <script> tag in response to a window.onload event or a function call, but you need to additionally instruct the Maps JavaScript API bootstrap to delay execution of your application code until the Maps JavaScript API code is fully loaded. You may do so using the callback parameter, which takes as an argument the function to execute upon completing loading the API"""
>>> l = re.split('\W*', s)
>>> a = []
>>> for i, j in enumerate(l):
...     if j not in a and j in l[:i]:
...         a.append(j)
... 
>>> print(a)
['your', 'to', 'or', 'a', 'you', 'the', 'Maps', 'JavaScript', 'API', 'code', 'may', 'do', 'so', 'function', 'loading']

 import re
res = []
for line in “манна, осанна, мумма, кллорд” :
     linew = re.findall(r“мм|нн”, line)
     res.extend(linew)]

text = “манна, осанна, мумма, кллорд”
rese = lambda text: re.findall(r'мм|нн', text)
>>>rese(text)
['нн', 'нн', 'мм']

>>> import re
>>> text = "манна, осанна, мумма, кллорд".decode('utf-8')
>>> l = re.findall(u'(?u)(\w*[мм|нн]\w*)', text)
>>> for i in l:
...     print i.encode('utf-8')
... 
манна
осанна
мумма