用*打印等边三角形

line = int(input(‘请输入边长’))
row = 1
while row <= line:
left = line - row +1
while left >0:
print(’ ‘,end =’’)
left -= 1
star = 2row - 1
star = row
while star > 0:
print(’’,end =’’)
print(’ ‘,end =’’)
star -= 1
right = line - row +1
while right >0:
print(’ ‘,end =’’)
right -= 1
print(’’)
row += 1