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."
))           

1 2 3 4

'one' 'two' 'three' 'four'

True False False True

'%r %r %r %r' '%r %r %r %r' '%r %r %r %r' '%r %r %r %r'

'I had this thing.' 'That you could type up right.' "But it didn't sing." 'So I said goodnight.'

知识在于点滴积累