#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time : 2020/12/2 15:06
# @Author : gaoxuejian
# @Site : 
# @File : test_urllib1.py
# @Software: PyCharm


import urllib.request

# respnose=urllib.request.urlopen("http://www.baidu.com/")
# print(respnose.status)
# # print(respnose.read())
# print(respnose.headers)
#


import math

print(math.ceil(10.21))
print(math.floor(5.9))
print(math.sqrt(16))
print(math.comb(4, 2))
print(math.copysign(13.5, -0.654))
