(1)、lst = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
#lst[3*3::3] output:[9, 12, 15]
lst[3*3::3] = len(lst[3*3::3])*[0]
output:[0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 10, 11, 0, 13, 14, 0]
(2)、s = '0123456789'
s[::-1] '9876543210'
s[::-2] '97531'
s[::-3] '9630'
s = '0123456789'
s[:2:-1] '9876543'
s[1:2:-1] ''
s[2:1:-1] '2'
s[2::-1] '210'
s[-1:-2:-1] '9'
s[-1:-5:-2] '97'
这两段看不懂能否帮忙详细就此题解答?