我正在尝试从一组唯一的值构建一个字典,以用作键和提供项目的元组的压缩列表。
set = ("a","b","c")
lst 1 =("a","a","b","b","c","d","d")
lst 2 =(1,2,3,3,4,5,6,)
zip = [("a",1),("a",2),("b",3),("b",3),("c",4),("d",5)("d",6)
dct = {"a":1,2 "b":3,3 "c":4 "d":5,6}
但我得到:
dct = {"a":1,"b":3,"c":4,"d":5}
到目前为止,这是我的代码:
#make two lists
rtList = ["EVT","EVT","EVT","EVT","EVT","EVT","EVT","HIL"]
raList = ["C64G","C64R","C64O","C32G","C96G","C96R","C96O","RA96O"]
# make a set of unique codes in the first list
routes = set()
for r in rtList:
routes.add(r)
#zip the lists
RtRaList = zip(rtList,raList)
#print RtRaList
# make a dictionary with list one as the keys and list two as the values
SrvCodeDct = {}
for key, item in RtRaList:
for r in routes:
if r == key:
SrvCodeDct[r] = item
for key, item in SrvCodeDct.items():
print key, item
最佳答案
您不需要任何。只需使用collections.defaultdict
即可。
import collections
rtList = ["EVT","EVT","EVT","EVT","EVT","EVT","EVT","HIL"]
raList = ["C64G","C64R","C64O","C32G","C96G","C96R","C96O","RA96O"]
d = collections.defaultdict(list)
for k,v in zip(rtList, raList):
d[k].append(v)
关于python - Python。向字典中的键添加多个项目,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40794653/