python 向上取整ceil 向下取整floor 四舍五

#encoding:utf-8

import math

#向上取整 http://www.manongjc.com/article/1335.html

print "math.ceil---"

print "math.ceil(2.3) => ", math.ceil(2.3)

print "math.ceil(2.6) => ", math.ceil(2.6)

#向下取整 http://www.manongjc.com/article/1336.html

print "\\nmath.floor---"

print "math.floor(2.3) => ", math.floor(2.3)

print "math.floor(2.6) => ", math.floor(2.6)

#四舍五入 http://www.manongjc.com/article/1337.html

print "\\nround---"

print "round(2.3) => ", round(2.3)

print "round(2.6) => ", round(2.6)

#这三个的返回结果都是浮点型 http://www.manongjc.com/article/1338.html

print "\\n\\nNOTE:every result is type of float"

print "math.ceil(2) => ", math.ceil(2)

print "math.floor(2) => ", math.floor(2)

print "round(2) => ", round(2)

运行结果：

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