2 >>> unpack_normal([1,2])
4 >>> unpack_normal([1,2,3]) # doctest: +ELLIPSIS
5 Traceback (most recent call last):
10 >>> unpack_comp([1,2,3]) # doctest: +ELLIPSIS
11 Traceback (most recent call last):
14 >>> unpack_expr([1,2])
16 >>> unpack_expr([1,2,3]) # doctest: +ELLIPSIS
17 Traceback (most recent call last):
26 a,b = [ n for n in l ]
30 a,b = [ n*n for n in l ]