On May 28, 3:11 am, Peter Otten <__pete... at web.de> wrote:
> Gary Herron wrote:
> > Alok Kumar wrote:
> >> Dear All,
>
> >> I am using dictionary for filling my xpath parsed data.
>
> >> I wanted to use in the following manner.
>
> >> mydict[index] ["key1"] ["key2"] #Can someone help me with right
> >> declaration.
>
> >> So that I can fill my XML xpath parsed data
>
> >> mydict[0] ["person"] ["setTime"] = "12:09:30"
> >> mydict[0] ["person"] ["clrTime"] = "22:09:30"
>
> [I didn't see the original post]
>
> >>> from collections import defaultdict
> >>> def make_inner():
>
> ... return defaultdict(lambda: defaultdict(make_inner))
> ...>>> mydict = make_inner()
> >>> mydict[0]["person"]["setTime"] = "12:09:30"
> >>> mydict[0]["person"]["shoes"]["color"] = "bright yellow"
> >>> mydict
>
<snip>
When this has come up in previous threads, I think this was the best
solution that was proposed:
from collections import defaultdict
class recursivedefaultdict(defaultdict):
def __init__(self):
self.default_factory = type(self)
Here is this recursivedefaultdict in action:
data = [
('A','B','Z',1),
('A','C','Y',2),
('A','C','X',3),
('B','A','W',4),
('B','B','V',5),
('B','B','U',6),
('B','D','T',7),
]
table = recursivedefaultdict()
for k1,k2,k3,v in data:
table[k1][k2][k3] = v
for kk in sorted(table.keys()):
print "-",kk
for jj in sorted(table[kk].keys()):
print " -",jj
for ii in sorted(table[kk][jj].keys()):
print " -",ii,table[kk][jj][ii]
Prints:
- A
- B
- Z 1
- C
- X 3
- Y 2
- B
- A
- W 4
- B
- U 6
- V 5
- D
- T 7
-- Paul