等腰三角形

num = int(input("请输入整数："))
lst = []
count = num-1
for i in range(1, num*2):
    if i% 2 != 0:
        s = " ".join("*" * i).strip(" ")
        lst.append(s)
while count >= 0:
    print(" " * count*2 + lst[num-1-count])
    count = count - 1
===================================

n = int(input("请输入行数："))
for i in range(1, n+1):
    for j in range(2*n-2*i):
        print("", end=" ")
    for k in range(1, 2*i):
        print("*", end=" ")
    print()