adding a layer to a dictionary

I have a global dictionary like the following in my code:

param_values = {
            'aa' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,1.0),   (-1,-1)],     
            'ae' : [(-1,-1),   (-1,-1),    (0.1,0.8), (-1,-1),   (0.1,1.0),   (-1,-1)], 
            'ah' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,1.0),   (-1,-1)], 
            'ao' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.2,1.0),   (-1,-1)], 
            'b'  : [(-1,-1),   (0.0,0.0),  (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'ch' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'd'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'dh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.35),  (-1,-1)], 
            'dx' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.35),  (-1,-1)], 
            'eh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,1.0),   (-1,-1)], 
            'er' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.15,0.7),  (-1,-1)], 
            'ey' : [(-1,-1),   (-1,-1),    (0.3,1.0), (-1,-1),   (0.1,0.5),   (-1,-1)], 
            'f'  : [(0.3,1.0), (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (-1,-1)], 
            'g'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'hh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'ih' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'iy' : [(-1,-1),   (-1,-1),    (0.2,1.0), (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'jh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'k'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'l'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'm'  : [(-1,-1),   (0.0,0.0),  (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'n'  : [(-1,-1),   (0.1,1.0),  (-1,-1),   (0.3,1.0), (0.0,0.0),   (-1,-1)], 
            'ng' : [(-1,-1),   (0.1,1.0),  (-1,-1),   (-1,-1),   (0.0,0.0),   (-1,-1)], 
            'p'  : [(-1,-1),   (0.0,0.0),  (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'r'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            's'  : [(-1,-1),   (0.1,1.0),  (-1,-1),   (0.3,1.0), (0.0,0.0),   (-1,-1)],
            'sh' : [(-1,-1),   (0.1,1.0),  (-1,-1),   (0.3,1.0), (0.0,0.0),   (-1,-1)], 
            't'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'th' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'uh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (0.1,1.0)], 
            'uw' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (0.1,1.0)], 
            'v'  : [(0.3,1.0), (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (-1,-1)], 
            'w'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (0.1,1.0)], 
            'y'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.6),   (-1,-1)],  
            'z'  : [(-1,-1),   (0.1,1.0),  (-1,-1),   (0.3,1.0), (0.0,0.0),   (-1,-1)], 
            'zh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.6),   (-1,-1)], 
            'o'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (0.4,1.0)]
            }

But I have to add in a layer and separate into vowels and consonants, something like the following.

param_values = {
            'vowels':{
            'aa' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,1.0),   (-1,-1)],     
            'ae' : [(-1,-1),   (-1,-1),    (0.1,0.8), (-1,-1),   (0.1,1.0),   (-1,-1)], 
            'ah' : [(-1,-1)开发者_StackOverflow,   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,1.0),   (-1,-1)], 
            'ao' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.2,1.0),   (-1,-1)], 
            'eh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,1.0),   (-1,-1)], 
            'er' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.15,0.7),  (-1,-1)], 
            'ey' : [(-1,-1),   (-1,-1),    (0.3,1.0), (-1,-1),   (0.1,0.5),   (-1,-1)],
            'ih' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'iy' : [(-1,-1),   (-1,-1),    (0.2,1.0), (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'uh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (0.1,1.0)], 
            'uw' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (0.1,1.0)],   
            'o'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (0.4,1.0)]    
            },
            'consonants':{
            'b'  : [(-1,-1),   (0.0,0.0),  (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'ch' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'd'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'dh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.35),  (-1,-1)], 
            'dx' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.35),  (-1,-1)], 
            'f'  : [(0.3,1.0), (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (-1,-1)], 
            'g'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'hh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'jh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'k'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'l'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'm'  : [(-1,-1),   (0.0,0.0),  (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'n'  : [(-1,-1),   (0.1,1.0),  (-1,-1),   (0.3,1.0), (0.0,0.0),   (-1,-1)], 
            'ng' : [(-1,-1),   (0.1,1.0),  (-1,-1),   (-1,-1),   (0.0,0.0),   (-1,-1)], 
            'p'  : [(-1,-1),   (0.0,0.0),  (-1,-1),   (-1,-1),   (0.1,0.8),   (-1,-1)], 
            'r'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            's'  : [(-1,-1),   (0.1,1.0),  (-1,-1),   (0.3,1.0), (0.0,0.0),   (-1,-1)],
            'sh' : [(-1,-1),   (0.1,1.0),  (-1,-1),   (0.3,1.0), (0.0,0.0),   (-1,-1)], 
            't'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'th' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.4),   (-1,-1)], 
            'v'  : [(0.3,1.0), (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (-1,-1)], 
            'w'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (-1,-1),     (0.1,1.0)], 
            'y'  : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.6),   (-1,-1)],  
            'z'  : [(-1,-1),   (0.1,1.0),  (-1,-1),   (0.3,1.0), (0.0,0.0),   (-1,-1)], 
            'zh' : [(-1,-1),   (-1,-1),    (-1,-1),   (-1,-1),   (0.1,0.6),   (-1,-1)] 
             }                         
            }

This is now correct as my question has been edited. Thank you.

---

If you want to go through your initial dictionary only once, you can do:

vowels, consonants = {}, {}
for (letters, data) in param_values.iteritems():
    relevant_dict = vowels if is_vowel(letters) else consonants
    relevant_dict[letters] = data
param_values = {'vowels': vowels, 'consonants': consonants}

This solution has the advantage of explicitly showing in a single line that letters go either in vowels or in consonants.

---

vowels = [(k, v) for k, v in param_values.iteritems() if is_vowel(k)]
consonants = [(k, v) for k, v in param_values.iteritems() if not is_vowel(k)]
param_values = {'vowels': vowels, 'consonants': consonants}