If keys and values are unique you could do this...
--------------
# Left : Right
roman = { "One" : "I",
"Two" : "II",
"Three" : "III",
"Four" : "IV",
"Five" : "V",
"Six" : "VI",
"Seven" : "VII",
"Eight" : "VIII",
"Nine" : "IX",
"Ten" : "X" }
left, right = zip( *roman.items() )
left = list(left)
right = list(right)
print left[ right.index("VIII") ]
--------------
... result is "Eight".
Hmmm! zip returns tuples, which need to be turned into lists to do
much with. Maybe not the best solution in this case.
Verse.
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