applications that require a long-lived connection to each user. ## Quick links • Current version: 6.4 (download from PyPI [https://pypi.python.org/pypi/tornado], release notes) • Source (GitHub) [https://github org/3/library/datetime.html#datetime.datetime] object or None. New in version 3.1. Changed in version 6.4: Now returns an aware datetime object instead of a naive one. Subclasses that override this method Changed in version 3.2: Added the single quote to the list of escaped characters. Changed in version 6.4: Now simply wraps html.escape [https://docs.python.org/3/library/html.html#html.escape]. This is equivalent

# Tornado Documentation Release 6.4 The Tornado Authors Jan 12, 2024 Powered by TCPDF (www.tcpdf.org) ## CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 Documentation 13 6.1 User's guide 13 6.2 Web framework 40 6.3 HTTP servers and clients 83 6.4 Asynchronous networking 101 6.5 Coroutines and concurrency 120 6.6 Integration with other services applications that require a long-lived connection to each user. ## QUICK LINKS • Current version: 6.4 (download from PyPI, release notes) • Source (GitHub) • Mailing lists: discussion and announcements

applications that require a long-lived connection to each user. ## Quick links • Current version: 6.4 (download from PyPI [https://pypi.python.org/pypi/tornado], release notes) • Source (GitHub) [https://github org/3/library/datetime.html#datetime.datetime] object or None. New in version 3.1. Changed in version 6.4: Now returns an aware datetime object instead of a naive one. Subclasses that override this method Changed in version 3.2: Added the single quote to the list of escaped characters. Changed in version 6.4: Now simply wraps html.escape [https://docs.python.org/3/library/html.html#html.escape]. This is equivalent

applications that require a long-lived connection to each user. ## Quick links • Current version: 6.4 (download from PyPI [https://pypi.python.org/pypi/tornado], release notes) • Source (GitHub) [https://github org/3/library/datetime.html#datetime.datetime] object or None. New in version 3.1. Changed in version 6.4: Now returns an aware datetime object instead of a naive one. Subclasses that override this method Changed in version 3.2: Added the single quote to the list of escaped characters. Changed in version 6.4: Now simply wraps html.escape [https://docs.python.org/3/library/html.html#html.escape]. This is equivalent

# Tornado Documentation Release 6.4 The Tornado Authors Nov 29, 2023 Powered by TCPDF (www.tcpdf.org) ## CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 Documentation 13 6.1 User's guide 13 6.2 Web framework 40 6.3 HTTP servers and clients 83 6.4 Asynchronous networking 101 6.5 Coroutines and concurrency 120 6.6 Integration with other services applications that require a long-lived connection to each user. ## QUICK LINKS • Current version: 6.4 (download from PyPI, release notes) • Source (GitHub) • Mailing lists: discussion and announcements

# Tornado Documentation Release 6.4 The Tornado Authors Nov 29, 2023 Powered by TCPDF (www.tcpdf.org) ## CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 Documentation 13 6.1 User's guide 13 6.2 Web framework 40 6.3 HTTP servers and clients 83 6.4 Asynchronous networking 101 6.5 Coroutines and concurrency 120 6.6 Integration with other services applications that require a long-lived connection to each user. ## QUICK LINKS • Current version: 6.4 (download from PyPI, release notes) • Source (GitHub) • Mailing lists: discussion and announcements

notebook, see the collection of examples [https://nbviewer.jupyter.org/github/jupyter/notebook/tree/6.4.x/docs/source/examples/Notebook/]. ## Code cells A code cell allows you to edit and write new code See also Working with Markdown Cells [https://nbviewer.jupyter.org/github/jupyter/notebook/blob/6.4.x/docs/source/examples/Notebook/Working%20With%20Markdown%20Cells.ipynb] example notebook ## Raw cells ipynb] example notebook ## Notebook Basics [https://nbviewer.jupyter.org/github/jupyter/notebook/blob/6.4.x/docs/source/examples/Notebook/Notebook%20Basics.ipynb] example notebook ## Keyboard shortcuts All

Maintenance and upkeep improvements • Update links and fix check-release #6310 (@blink1073) • Update 6.4.x branch with some missing commits #6308 (@kycutler) #### 5.2.2 Other merged PRs • Specify minimum

1.6 2 2.1 2.2 2.3 2.4 2.5 3 3.1 3.2 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 6 6.1 6.2 6.3 6.4 目錄 介紹 第1章 Linux安全渗透简介 1.1 什么是安全渗透 1.2 安全渗透所需的工具 1.3 Kali Linux简介 1.4 安装Kali Linux 1.5 Kali更新与升级 1.6 漏洞扫描 5.1 使用Nessus 5.2 使用OpenVAS 第6章 漏洞利用 6.1 Metasploitable操作系统 6.2 Metasploit基础 6.3 控制Meterpreter 6.4 渗透攻击应用 大学霸 Kali Linux 安全渗透教程 2 6.5 7 7.1 7.2 7.3 7.4 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 9 9.1 armitage 大学霸 Kali Linux 安全渗透教程 214 6.2 Metasploit基础 图6.3 启动armitage界面 （3）启动armitage工具后，将显示如图6.4所示的界面。 图6.4 连接Metasploit界面 （4）在该界面显示了连接Metasploit服务的基本信息。在该界面单击Connect按 钮，将显示如图6.5所示的界面。 大学霸 Kali Linux 安全渗透教程

2^{36}=2^{6}*2^{30}\approx64*10^{9}=6.4*10^{10} $$ $$ 2^{32}=2^{2}*2^{30}\approx4*10^{9} $$ $$ 2^{23}=2^{3}*2^{20}\approx8*10^{6} $$ $$ 2^{36}=2^{6}*2^{30}\approx64*10^{9}=6.4*10^{10} $$ 2128 ## Estimating 4*10^{9} $$ $$ 2^{23}=2^{3}*2^{20}\approx8*10^{6} $$ $$ 2^{36}=2^{6}*2^{30}\approx64*10^{9}=6.4*10^{10} $$ $$ 2^{128}=2^{8}*2^{120} $$ ## Estimating larger powers of two $$ 2^{32}=2^{2}*2^{30}\approx4*10^{9} 4*10^{9} $$ $$ 2^{23}=2^{3}*2^{20}\approx8*10^{6} $$ $$ 2^{36}=2^{6}*2^{30}\approx64*10^{9}=6.4*10^{10} $$ $$ 2^{128}=2^{8}*2^{120}\approx256*10^{36} $$ ## Estimating larger powers of two $$