마름모출력/S.S.S

~cpp 
if __name__=='__main__':
    a=input('길이 입력')
    p=raw_input('패턴 입력 : ')
    for n in range(a+1):
        print ' '*(a-n)+p*(2*n-1)
    for n in range(a-1,0,-1):
        print ' '*(a-n)+p*(2*n-1)