Can't loop over a nested array

[smarx]

for loops in Vyper can loop over arrays, but not if they're nested. This code fails to compile with the surprising error 'Subscript' object has no attribute 'func':

@public
def __init__():
    x: uint256[5][2] = [[0, 1, 2, 3, 4], [2, 4, 6, 8, 10]]
    for i in x[1]:
        pass

[fubuloubu]

Seems weird, buy maybe we should allow. Should also check to see if it affects arrays in structs

[jacqueswww]

Meeting Notes: This should be allowed eventually but currently should throw a cleaner error.