#!/usr/bin/python
#-*- coding:utf-8 -*-

#**********************************************************
#Filename: 179_abs.py
#Author: Andrew Wang - shuguang.wang1990@gmail.com
#Description: ---
#Create: 2016-11-02 01:12:27
#Last Modifieda: 2016-11-02 01:12:27
#*********************************************************

print abs(2.3)
print abs(-23)
print abs(-2.3)
print abs(+2.3)
