Petits trucs, dont l'utilisation de "*" pour unpack et assignation

A = [1, 2, 3] ;     B = (4, 5, 6) ;     C = {7, 8, 9}
L = [*A, *B, *C]
print(L)
# [1, 2, 3, 4, 5, 6, 8, 9, 7]

a, *mid, b = [1, 2, 3, 4, 5, 6]
print(a, mid, b)
# 1 [2, 3, 4, 5] 6

Et l'opérateur "|" union