Question

OrderedDict([('red', 10.0),('blue',45.5),('green',34.4)]
xList[(u'blue',1.5,u'car'),(u'green',1.9,u'bike'),(u'red', 10,u'boat')]

如何通过将值xList[1]多重化来遍历orderedDict和List来更新ordedDict值？

希望有意义的是我在过去的几个晚上都在努力解决这个问题，我们将非常感谢任何帮助。

理想情况下，我想回来：

OrderedDict[('red',100),('blue',68.25),('green',65.36)]

Answer 1

from collections import OrderedDict
d = OrderedDict([('red', 10.0),('blue',45.5),('green',34.4)])
xList = [(u'blue',1.5,u'car'),(u'green',1.9,u'bike'),(u'red', 10,u'boat')]
for tup in xList: # iterate over each tuple
    if tup[0] in d: # make sure key is in the dict
        d[tup[0]] *= tup[1] # multiply current value by the second element of the tuple

print(d)

OrderedDict([('red', 100.0), ('blue', 68.25), ('green', 65.36)])

通过列表[1] muiltplying更新orderedDIct值

1 个答案: