Help with dictionaries and multidimensial lists

[Cameron Pulsford]

Hey all, I have a dictionary that looks like this (small example version)
{(1, 2): 0} named a

so I can do a[1,2] which returns 0. What I also have is a list of
coordinates into a 2 dimensional array that might look like this b =
[[1,2]]. Is there anyway I can call a[b[0]] and have it return 0?
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