python之为什么打印文件时会出现这些引号

我使用这段代码创建了一个文件:

file = open("full_names.txt", "wb") 
 
file.write("Bob Smith\nMichael Jackson\nTony Tiger\nWinston Churchill\nHenry Kissinger\nHamid Karzai\nJohn Major\nJohnny Quest") 
 
file.close() 

然后我运行脚本将文件打印到屏幕上:

with open("full_names.txt", "rb") as f: 
    for line in f: 
        first, last = line.strip().split(" ") 
        print "Last Name: %r First Name: %r" % (last, first) 

但输出显示名称周围有引号，如下所示:

Last Name: 'Smith' First Name: 'Bob' 

有谁知道为什么或如何摆脱它们？