python 2.7 - Appending to a list of dictionary values list won't work -

I have a dictionary and I want to get a list of all the values and one more. So I did something like this

  new_val = 'v3' test = {'k1': 'v1', 'k2': 'v2'} l = test.values (). New_val)

However when I do this, l = none . But if I use an intermediate

  l = test.values (), l.append (new_val)

l < / Code> What I need in it The first method works.

  
   l = test.values (). The attachment (new_val)     l  is none because the return value of  .append ()  (which you can call  l ) function. 
   l = test.values () l.append (new_val)  
  This works because you make a copy first  A new value for test.values ()  and entering it into  l , and then  l  
 
  Add 
   l = test.values () x = l.append (new_val)  
  then also  x  Is  none








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