简单的输出 python01

#!/usr/bin/python
#-*- code:UTF-8 -*-

if __name__ == "__main__":
    print "Hello world"
    print 1+2
    name = "jack"
    print "%s is his name" % name
    firstname = name
    lastname = "Li"
    print "his first name is: %s and his last name is %s."%(firstname,lastname)