Asterisk art in python

Question

I would like to produce this picture in python!

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


        

Answer 1

It's because of the operator precedence, use this one:

x=1
while x<10:
 print '%10s' % ('*'*x)
 x=x+1