Cara membuat bintang.

#***********
# ********* 
#  *******  
#   *****   
#    ***    
#     *     
#    ***    
#   *****   
#  *******  
# ********* 
#***********

loop = 10+1
mid = loop//2
for line in range(loop):
    for star in range(loop):
        if (star >= mid-abs(mid-line)) and (star <= mid+abs(mid-line)):
            print('*', end='')
        else:
            print(' ', end='')
    print('')

#     *     
#    ***    
#   *****   
#  *******  
# ********* 
#***********
# ********* 
#  *******  
#   *****   
#    ***    
#     *  

loop = 10+1
mid = loop//2
for line in range(loop):
    for star in range(loop):
        if star >= mid-abs(mid-abs(mid-line)) and star <= mid+abs(mid-abs(mid-line)):
            print('*', end='')
        else:
            print(' ', end='')
    print('')