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Post #1178 2.63K
Что выведет код?
from collections import ChainMap
a = {'x': 1, 'z': 3 }
b = {'y': 2, 'z': 4 }
c = ChainMap(a,b)
c['z'] = 10
c['w'] = 40
del c['x']
print(sum(a.values()), sum(b.values()))
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