Python3 方法整理

Python 3.3.2 round函数并非"四舍五入"

http://www.php.cn/python-tutorials-342815.html

http://www.cnblogs.com/xiangnan/p/3430579.html

Python 3 abs

http://www.runoob.com/python3/python3-func-number-abs.html

Python Number(数字)

http://www.runoob.com/python/python-numbers.html