从这个元组列表中:
[('IND', 'MIA', '05/30'), ('ND', '07/30'), ('UNA', 'ONA', '100'), \
('LAA', 'SUN', '05/30'), ('AA', 'SN', '07/29'), ('UAA', 'AAN')]
我想创建一个字典,其中每个第三元组的键值为[0]
和[1]
。因此,创建的dict的第一个键应该是'IND, MIA'
,第二个键'LAA, SUN'
最终结果应为:
{'IND, MIA': [('IND', 'MIA', '05/30'), ('ND', '07/30'), ('UNA', 'ONA', '100')],\
'LAA, SUN': [('LAA', 'SUN', '05/30'), ('AA', 'SN', '07/29'), ('UAA', 'AAN')]}
如果这是相关的,一旦有问题的值成为键,它们就可以从元组中删除,因为那时我不再需要它们了。任何建议都非常感谢!
答案 0 :(得分:4)
inp = [('IND', 'MIA', '05/30'), ('ND', '07/30'), ('UNA', 'ONA', '100'), \
('LAA', 'SUN', '05/30'), ('AA', 'SN', '07/29'), ('UAA', 'AAN')]
result = {}
for i in range(0, len(inp), 3):
item = inp[i]
result[item[0]+","+item[1]] = inp[i:i+3]
print (result)
Dict理解解决方案是可能的,但有些混乱。
从数组中删除键用
替换第二个循环线(result[item[0]+ ...
)
result[item[0]+","+item[1]] = [item[2:]]+inp[i+1:i+3]
Dict理解解决方案(比我最初想的要少一点:))
rslt = {
inp[i][0]+", "+inp[i][1]: inp[i:i+3]
for i in range(0, len(inp), 3)
}
要在答案中添加更多犹太教资料,这里有一些有用的链接:):defaultdict,dict comprehensions
答案 1 :(得分:2)
from itertools import izip_longest
def grouper(iterable, n, fillvalue=None):
"Collect data into fixed-length chunks or blocks"
# grouper('ABCDEFG', 3, 'x') --> ABC DEF Gxx
args = [iter(iterable)] * n
return izip_longest(fillvalue=fillvalue, *args)
{', '.join(g[0][:2]): g for g in grouper(inputlist, 3)}
应该这样做。
grouper()
方法一次为我们提供3个元组。
从字典值中删除键值:
{', '.join(g[0][:2]): (g[0][2:],) + g[1:] for g in grouper(inputlist, 3)}
您输入的演示:
>>> from pprint import pprint
>>> pprint({', '.join(g[0][:2]): g for g in grouper(inputlist, 3)})
{'IND, MIA': (('IND', 'MIA', '05/30'), ('ND', '07/30'), ('UNA', 'ONA', '100')),
'LAA, SUN': (('LAA', 'SUN', '05/30'), ('AA', 'SN', '07/29'), ('UAA', 'AAN'))}
>>> pprint({', '.join(g[0][:2]): (g[0][2:],) + g[1:] for g in grouper(inputlist, 3)})
{'IND, MIA': (('05/30',), ('ND', '07/30'), ('UNA', 'ONA', '100')),
'LAA, SUN': (('05/30',), ('AA', 'SN', '07/29'), ('UAA', 'AAN'))}
答案 2 :(得分:1)
from collections import defaultdict
def solve(lis, skip = 0):
dic = defaultdict(list)
it = iter(lis) # create an iterator
for elem in it:
key = ", ".join(elem[:2]) # create key
dic[key].append(elem)
for elem in xrange(skip): # append the next two items to the
dic[key].append(next(it)) # dic as skip =2
print dic
solve([('IND', 'MIA', '05/30'), ('ND', '07/30'), ('UNA', 'ONA', '100'), \
('LAA', 'SUN', '05/30'), ('AA', 'SN', '07/29'), ('UAA', 'AAN')], skip = 2)
<强>输出:强>
defaultdict(<type 'list'>,
{'LAA, SUN': [('LAA', 'SUN', '05/30'), ('AA', 'SN', '07/29'), ('UAA', 'AAN')],
'IND, MIA': [('IND', 'MIA', '05/30'), ('ND', '07/30'), ('UNA', 'ONA', '100')]
})