A list as a key for a dictionary

Question

I have multiple lists of tuples eg

[([1, 2, 3, 4], 2), ([5, 6, 7], 3)]

that I would like to have as keys to a dictionary (so each key in my dic

Answer 1

Use tuples instead.

>>> dict((tuple(x[0]), x[1]) for x in [([1,2,3,4],2),([5,6,7],3)])
{(5, 6, 7): 3, (1, 2, 3, 4): 2}