（Python）打印输出如下图形

Question

要求使用循环

当 n = 1

当 n = 2

当 n = 3

当 n = 4
（Python）打印输出如下图形

Answer 1

n=int(input("n = "))

for i in range(1,1+n):
    for j in range(i):
        print("*",end = '')
    for j in range(n-i):
        print(' ',end = '')
    for j in range(n-i):
        print(" ",end = '')
    for j in range(i):
        print('*',end = '')
    print()