我有这两个词:
a={"test1":90, "test2":45, "test3":67, "test4":74}
b={"test1":32, "test2":45, "test3":82, "test4":100}
如何提取相同键的最大值以获得新的dict,如下所示:
c={"test1":90, "test2":45, "test3":82, "test4":100}
答案 0 :(得分:7)
你可以这样试试,
>>> a={"test1":90, "test2":45, "test3":67, "test4":74}
>>> b={"test1":32, "test2":45, "test3":82, "test4":100}
>>> c = { key:max(value,b[key]) for key, value in a.iteritems() }
>>> c
{'test1': 90, 'test3': 82, 'test2': 45, 'test4': 100}
答案 1 :(得分:1)
试试这个:
>>> a={"test1":90, "test2":45, "test3":67, "test4":74}
>>> b={"test1":32, "test2":45, "test3":82, "test4":100}
>>> c={ k:max(a[k],b[k]) for k in a if b.get(k,'')}
{'test1': 90, 'test3': 82, 'test2': 45, 'test4': 100}
答案 2 :(得分:0)
不是最好的,但仍然是变体:
from itertools import chain
a = {'test1':90, 'test2': 45, 'test3': 67, 'test4': 74}
b = {'test1':32, 'test2': 45, 'test3': 82, 'test4': 100, 'test5': 1}
c = dict(sorted(chain(a.items(), b.items()), key=lambda t: t[1]))
assert c == {'test1': 90, 'test2': 45, 'test3': 82, 'test4': 100, 'test5': 1}