Generate carry in Carry-lookahead adder
Recently, I am implementing an 8-bit Carry-lookahead adder . But unfortunately, almost all materials in the Internet only provide the formula to get C1 to C4 , so I write a simple python script to...
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Linux / Unix: “-bash: python: command not found” error and solution
I am a new user and trying to run python program. I have a cloud based VM/VPS and when I type python mycode.py at the terminal of my server, I get the following error: -bash: python: command not found...
View ArticleTalk Python to Me: #94 Guarenteed packages via Conda and Conda-Forge
Have you ever had trouble installing a package you wanted to use in your python app? Likely it contained some odd dependency, required a compilation step, maybe even using an uncommon compiler like...
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How to choose your first programming language
How to choose your first programming language Posted 11 Jan 2017 Kojo Idrissa Feed 1 up Image by : opensource.com The reasons for learning to program are as a varied as the people who want to learn....
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Python NLTK学习6（创建词性标注器）
发表于:6天前阅读:76 本系列博客为学习《用python进行自然语言处理》一书的学习笔记。 默认标注器 默认标注器为每个单词分配同样的标记，尽管很平庸，但它也是有作用的，先看示例： import nltk raw = "You are a good man, but i don't love you!" tokens = nltk.word_tokenize(raw) default_tagger...
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[scrapy]scrapy源码分析 数据是如何处理的
下载中间件(Download MiddleWare)是如何加载的 Spider MiddleWare是如何加载的 配置文件是如何起作用的 整体的执行流程是怎样的 扩展件是如何工作的 数据是怎么处理的 我们之前经常会写yield Request ,yield Item 这种东西，到底yield 是做什么用的？返回的item又是如何处理的，好了我们今天先看数据是数据处理的。...
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Lambdascript adds functional programming to Python
Lambdascript,a pure functional language built atop python 3, provides a bridge between Python and functional programming, in yet another nod to a software development paradigm that has been attracting...
View ArticleWebinar: Adding a REST API to a Django Application
Calvin Hendryx-Parker (CTO of sixfeetup, and founder of the Indianapolis-based IndyPy user group) hosted a webinar for us where he showed how to add a REST API to a Django application. In the webinar,...
View ArticlePYTHON open/文件操作
[注]虽是转载，但会在原文上有些修改！ open/文件操作 f=open('/tmp/hello','w') #open(路径+文件名,读写模式) #读写模式:r只读,r+读写,w新建(会覆盖原有文件),a追加,b二进制文件.常用模式 如:'rb','wb','r+b'等等 读写模式的类型有： rU 或 Ua 以读方式打开, 同时提供通用换行符支持 (PEP 278) w以写方式打开，...
View ArticlePyCon: PyCon Startup Row 2017 Applications Are Now Open!
Starting at the 2011 conference in Atlanta, the PyCon Expo Hall has offered a special event for startups: “Startup Row,” a row of booths that features interesting startups built with python. We’re...
View Article前两篇转载别人的精彩文章，自己也总结一下python split的用法吧！
前言：前两篇转载别人的精彩文章，自己也总结一下吧！ 最近又开始用起py，是为什么呢？ 自己要做一个文本相似度匹配程序，大致思路就是两个文档，一个是试题，一个是材料，我将试题按每题分割出来，再将每题的内容与材料中进行文本相似度匹配。 所以先首先要做的是将试题把每道题作为一个字符串切割开来，存放到字典中。 程序入下： # -*- coding:utf-8 -*- import re #正则模块 f =...
View ArticleExtending Templates
Recently at work, I had a quite long code review from a very young, very rushed co-worker. Let many such reviews (my own included) there were several instances of copy-paste coding, where the same...
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PyTennessee: PyTN Profiles:Kevin Najimi and Wingware
Speaker Profile: Kevin Najimi ( @kevin_najimi ) Kevin is a huge fan of coding in python and finance. He wants everyone to enjoy programming in Python at least as much as he does. He cares deeply about...
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Thomas Wiecki on Probabilistic Programming with PyMC3
A rolling regression with PyMC3 : instead of the regression coefficients being constant over time (the points are daily stock prices of 2 stocks), this model assumes they follow a random-walk and can...
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PyTennessee: PyTN Profiles:A. Jesse Jiryu Davis and Level12
Speaker Profile: A. Jesse Jiryu Davis ( @jessejiryudavis ) Staff Engineer at MongoDB in New York City specializing in C, python, and async. Lead developer of the MongoDB C Driver libraries libbson and...
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[人工智能]机器学习的框架偏向于Python原因
前言 主要有以下原因: 1. python是解释语言，程序写起来非常方便 写程序方便对做机器学习的人很重要。 因为经常需要对模型进行各种各样的修改，这在编译语言里很可能是牵一发而动全身的事情，Python里通常可以用很少的时间实现。 举例来说，在C等编译语言里写一个矩阵乘法，需要自己分配操作数（矩阵）的内存、分配结果的内存、手动对BLAS接口调用gemm、最后如果没用smart...
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Python时代到来，你准备好了么？
python时代到来，你准备好了么？ 一点号it黑马程序员14小时前 php?url=0FRXMSy7e8" alt="Python时代到来，你准备好了么？" />求职 地图 网页 应用 关键词：Python就业前景怎么样？ 1. Python上手容易，入门简单<<<...
View Article转]python 结巴分词(jieba)学习
源码下载的地址：https://github.com/fxsjy/jieba 演示地址：http://jiebademo.ap01.aws.af.cm/ 特点 1，支持三种分词模式： a,精确模式，试图将句子最精确地切开，适合文本分析； b,全模式，把句子中所有的可以成词的词语都扫描出来, 速度非常快，但是不能解决歧义；...
View ArticleNew year, new Python: Python 3.6
python 3.6 was released in the tail end of 2016. Read on for a few highlights from this release. New module: secrets ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Python 3.6 introduces a new module in the standard...
View ArticleNew in Python: Underscores in Numeric Literals
python 3.6 added some interesting new features. The one that we will be looking at in this article comes from PEP 515: Underscores in Numeric Literals . As the name of the PEP implies, this basically...
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