Printing Simple Diamond Pattern in Python

Question

I would like to print the following pattern in Python 3.5 (I\'m new to coding):

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


        

Answer 1

a = 10
for x in range (a):
  print(" " * (a - x) + "*" * (x+1) + "*" *(x))
#+ this = diamond
for x in reversed(range(a-1)):
    print(" " * (a - x) + "*" * (x) + "*" *(x+1))