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《Python网络数据采集》
《Python网络数据采集》
第一部分 创建爬虫
第1章 初见网络爬虫 2
1．1 网络连接 2
1．2 BeautifulSoup简介 4
1．2．1 安装BeautifulSoup 5
1．2．2 运行BeautifulSoup 7
1．2．3 可靠的网络连接 8
第2章 复杂HTML解析 11
2．1 不是一直都要用锤子 11
2．2 再端一碗BeautifulSoup 12
2．2．1 BeautifulSoup的find()和findAll() 13
2．2．2 其他BeautifulSoup对象 15
2．2．3 导航树 16
……(Python Network Data Acquisition)
- 2019-05-07 11:58:38下载
- 积分：1
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AppleScript
ActionScript 值得推荐的actionscript入门教程(ActionScript cook book)
- 2013-10-15 11:50:58下载
- 积分：1
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jizu-homework
北航计算机组成原理测试题目（附参考答案）
包括： 作业1,2,3,5,6.(Northern computer composition principle test questions (with suggested answers) include: Job 1,2,3,5,6.)
- 2014-06-11 14:09:21下载
- 积分：1
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NIOS_Design_Guider(Rev2.1)
Nios II 设计。Nios II处理器的使用(Nios II Design)
- 2009-03-26 08:16:29下载
- 积分：1
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Documents
Proteus and keil c programs are here
- 2017-07-17 23:20:45下载
- 积分：1
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jarkom
belajar jaringan lanjut
- 2019-05-12 11:18:30下载
- 积分：1
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nannvshengshibie
本文通过对男性和女性声音的语音特征的研究，发现男女声的基音频率存在较大的差异，并设计了基于基音频率分析的男女声识别系统。男女声识别系统由以下三个模块电路构成：话筒放大器，低通滤波器，半波整流电路，单片机测量控制模块。话筒放大器采用NE5532P音前置芯片，对语音信号进行放大；八阶低通滤波器MAX293完成基音信号的提取；单片机STC12C5410AD实现频率测量和控制输出功能。经仿真与电路实测，男女声的识别效果良好。(In this paper, the voices of male and female voice characteristics of the findings of a study of the fundamental frequency of the sound of men and women there is a big difference, and the design of frequency analysis based on the pitch of the voice recognition system for men and women. Voice Recognition System for men and women from the circuit the following three modules: the microphone amplifier, low-pass filter, half-wave rectifier circuit, single-chip measurement control module. NE5532P sound using the microphone pre-amplifier chip amplification of voice signals eight MAX293-order low-pass filter to complete the extraction of pitch signal STC12C5410AD single-chip realization of the frequency of measurement and control output. By circuit simulation and measurement, the identification of male and female voices well.)
- 2009-04-12 16:23:04下载
- 积分：1
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VHDLprocess
通过插图详细解说了用modelsim仿真VHDL程序的过程，适于初学者。(Through the illustrations a detailed explanation of VHDL using modelsim simulation course of the proceedings, suitable for beginners.)
- 2010-03-08 13:30:38下载
- 积分：1
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Adviced_XML_Programming
XML 高级编程 - 学习研究更高级的 XML 编程，希望能够帮助某些朋友。(XML high-level programming- study and research more advanced XML programming, hoping to help some friends.)
- 2009-12-28 16:38:01下载
- 积分：1
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计算机系统结构习题答案(郑伟民)
计算机系统结构（郑伟民）习题答案，答案很全(Computer System Architecture Exercise Answers)
- 2019-03-27 12:20:52下载
- 积分：1
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