如何使用python 2.7制作三角形

Question

我想在python 2.7中创建空心三角形图案，就像这样

    *
   * *
  *   *
 *     *
* * * * *

我想我可以使用循环代码

line = 5
for i in range (line):
    print (line-i) * " " + (line+1) * "* "

但输出是

    *
   * *
  * * * 
 * * * * 
* * * * *

有人帮我制作空心三角形吗？ 谢谢。

Answer 1

line = 5
print (line-1) * " " + "* "
for i in xrange(1,line-1):
    print (line-i-1)* " " +  "*" + (2*i -1)*" " + "* "
print (line) * "* "