习题8 打印，打印

formatter = "%r %r %r %r"

print formatter % (1,2,3,4)
print formatter % ("one","two","three","four")
print formatter % (True,False,False,True)
print formatter % (formatter,formatter,formatter,formatter)
print formatter %(
"I had this thing.",
"That you could type up right.",
"But it didn't sing.",
"So I said goodnight."
)

给出输出结果为



又是一种新的 print 用法格式

挺好，挺好

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附加练习

2单双引号的工作原理？

最后通用单引号，如果内有单引号的时候才用双引号。did't这里有个单引号了，所以那句话是双引号

注意字符串一般用%s，避免用%r。

%r是给调试的时候用的