将嵌套列表和普通列表组合成字典

Question

Let's say I have two lists, where one is a nested list and the other is a normal list, how do I combine them into a dictionary?

[[1, 3, 5], [4, 6, 9]] # Nested list

[45, 32] # Normal list

{(1, 3, 5): 45, (4, 6, 9): 32} # The dictionary

I tried this but it gives me an error,

dictionary = dict(zip(l1, l2)))
print(dictionary)

Answer 1

The error you got was probably something like this:

TypeError: unhashable type: 'list'

[1, 3, 5] and (1, 3, 5) are not the same. Tuples are immutable and therefore can be used as dictionary keys, but lists cannot because they can be modified.

The following will work:

dict(zip(map(tuple, l1), l2)))

Or more clearly:

{tuple(k): v for k, v in zip(l1, l2)}