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0
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1 def maxes(dicts):
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2 '''
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3 ({'a' : 5, 'b' : 9}, {'a' : 10, 'b' : 943})
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4 '''
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5 newdict = {}
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6 for d in dicts:
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7 for k,v in d.items():
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8 newdict[k] = max(v, newdict.get(k, 0))
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9 return newdict
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10
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11 def scaledict(d,scl):
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12 # scales all values in dict and returns a new dict
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13 return dict([(k,v*scl) for k,v in d.items()])
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14
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15 # class Setting that scales, maxes
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45
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16
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17 def subsetdict(d, dkeys, default=0):
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18 'Subset of dictionary d: only the keys in dkeys'
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19 # print 'd', d, 'dkeys', dkeys
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20 newd = {} # dirty variables!
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21 for k in dkeys:
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22 newd[k] = d.get(k, default)
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23 return newd
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