Python提问:这个为啥反转不过来，求帮看一下

试试这样：

row = i * ' ' + zwb[:i+1][::-1]

ch = input(">>>")
zmb = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
n = zmb.find(ch)

for i in range(n + 1):
    row = i * " " + zmb[:n+1-i][::-1]
    print(row)