python输出怎么增加空格

#!/usr/bin/python

# -*- coding: UTF-8 -*-

l = []

for i in range(3):

    x = (input())

    l.append(x)

l.sort()

for i in range(0,3):

    print (l[i] ,"",end = "")

print ("\n")

1

9

5

1 5 9