python tuple and dict arg

def message(text,*line ,**head):
    for key in head.keys():
        print key+":"+head[key];
    print
    print text
    for item in line:
        print item;
        

message('this is text','first line','second line',subject='lunch',to='[e-mail]',sender='[e-mail]')

output:

to:[e-mail]
sender:one @163.com
subject:lunch


this is text
first line
second line