Helloooooooo everybody !
I was just messing with dictionaries and lists, and I wonder if we
could solve the problem once and for all with an inefficient generic
solution. Here's the thing :
I often have to define both a function, and its inverse. Something like :
d = {
'a' : 1,
'b' : 2,
'c' : 1,
'd' : 3
}
Then, I want to find the list of all elements whose image is a 1, or
2, or 3, and end up defining the following dictionary :
d_inv = {
1 : ['a','c'],
2 : ['b'],
3 : ['d']
}
Aaaaaand it would be sooo nice if there was a way to write d**(-1)[2],
or something of the kind ! Did you ever write a code like this, and
would you be interested by a generic tool for that ?
Otherwise I'll just keep on computing the inverse of my dictionaries
with a couple of Python lines ;-)
Have fuuuuuuuun !
Nathann
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