python 基础学习一

1.基本问题
x = “There are % type of people.” % 10
binary = “binary”
print(“Those who know %s and those who %s.” % (binary, binary)

1.%r		写入所有格式	print的意思		
2.%s
3.%d
4.%f

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."
)

输出：
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.'

print('.' * 10)			#..........