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Using Learning Rate Schedules for Deep Learning Models in Python with Keras
Training a neural network or large deep learning model is a difficult optimization task. The classical algorithm to train neural networks is called stochastic gradient descent . It has been well...
View ArticleElse If Is Not Special (Except in Python)
Prepare yourselves, for I am about to make a code formatting argument, which is almost always certainly a waste of time. But this formatting argument is rooted in a truth of how programming languages...
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python语法基础归纳(2)--序列对象
公有方法序列集合支持索引和分片操作。 索引格式为：seq[i]。负数索引从序列的尾部开始计数，最尾端的元素索引为-1。 分片格式为：seq[start:end]，中间用冒号分隔，不包含end。索引可正可负，要求start <= end。1 元组（tuple）(1)元组的创建Tuple_namr = (元素1，元素2，...)Tuple_name = tuple()...
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python语法基础归纳(1)
1 模块导入的两种方式及区别import 模块名 [as 别名]这种方式只能导入模块，不能导入模块中具体对象。在使用时需要以“模块名.对象名”的方式进行访问；如果有别名，则只能用“别名.对象名”的方式进行访问from 模块名 import 对象名 [as...
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【图文详解】python爬虫实战――5分钟做个图片自动下载器
制作爬虫的基本步骤一般来说，制作一个爬虫需要分以下几个步骤：1. 分析需求（对，需求分析非常重要，不要告诉我你老师没教你）2. 分析网页源代码，配合F12（没有F12那么乱的网页源代码，你想看死我？）3. 编写正则表达式或者XPath表达式（就是前面说的那个神器）4. 正式编写python爬虫代码效果运行： 恩，让我输入关键词，让我想想，输入什么好呢？好像有点暴露爱好了。 回车...
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菜鸟入门_Python_机器学习（1）_线性可分的双月实验
系统：win7-CPU; 编程环境：Anaconda2-python2.7，IDE：pycharm5; 来看我们的任务：Generate random data in two groups controlled by parameters r, w, d, Na, Nb, and plot out. (ref. p61 on Haykin)?Implement Perceptron...
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Web Service Efficiency at Instagram with Python
Instagram currently features the world’s largest deployment of the Django web framework, which is written entirely in python. We initially chose to use Python because of its reputation for simplicity...
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Running a Python 3 REST application with Statsd and Consul support in Docker
Where I currently work we build a lot of RESTful services in either Go (golang) or python. Many of these services are deployed to Apache Mesos via Docker containers with everything tied up nicely...
View ArticleWhat is Pythonic code? This online course attempts to answer the question
This course will take you on a tour of over 50 of the more popular and useful code examples demonstrating pythonic code. In the examples, you'll first see non-Pythonic code and then the more natural...
View ArticleInsert, Read, Update, Delete in MongoDb Using Python
Recently, I had the opportunity of working onpython web application with MongoDb as back end. In this tutorial, I’ll brief about how I did the basic insert, read, update and delete operations in...
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How I test my code: coverage and automation (part 3)
This is the third installment in my “How I test code”-series. In this post, I get into the benefits of measuring test coverage and show how you can run automated tests; locally and remotely. Test...
View Articledjango-url调度器-高级篇
我们在中级篇中学会了如何进行反向解析，但是有这样一个问题，在为 url 命名的时候，名字不能重复，否则会导致各种各样的问题。在 url 还少的时候保证不重名还是比较简单的，但是 url 多起来以后就比较难了。为了解决这样的问题，可以在 url 中加一个前缀。例如，我有一个 url 的名字叫做 'comment' ，此时，我可以为其加一个前缀，这个前缀通常是 app...
View ArticleDjango Weblog: Django 1.10 beta 1 released
As part of the Django 1.10 release process, today we've released Django 1.10 beta 1, a preview/testing package that represents the second stage in the 1.10 release cycle and an opportunity for you to...
View Articlepython整理之运算符重载
1.__getitem__ （/python/class/operator_overload/getitem.py） 获取一条记录（列表根据偏移量获取数值） 2.__setattr__ （/python/class/operator_overload/setattr.py） 添加类/实例属性...
View Articlepython技巧
python的moudle是很重要的一个概念，我看到好多人写的moudle里都有一个__init__.py文件。有的__init__.py中是空白，有的却会有__all__参数。搜索了下总结下__all__参数的作用。 如果其他页面import *的时候如果__init__.py是空白的，可以直接import到moudle的所有函数。而如果__init__.py中定义了__all__，则import...
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Mapping Your Google Location History with Python
I recently wrote about visualizing my Foursquare check-in history and it inspired me to map my entireGoogle location history data about 1.2 million GPS coordinatesfrom my Android phone between 2012...
View ArticlePython学习6.1_函数参数及参数传递
大多数编程语言都绕不开一个名词，那就是--函数(function)。而函数很重要的部分则是参数(arguments)的使用。python的参数传递总体来说是根据位置，传递对应的参数。阐述如下： 1、位置参数及传递： 位置参数 ： 顾名思义位置参数是根据形参的位置先后顺序传入的。 如下：定义一个测试函数，传入三个参数，然后依次打印出这三个参数： def fun(first, second,...
View ArticlePython for OPS and platform teams - Pavel Chunyayev
Tags: python , pun (One of the talks at the 22 June 2016 Amsterdam Python meetup) The sub-title of his talk is supporting development teams in their journey to Continuous Delivery . Pavel’s job...
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tickets：Python 实现的命令行火车票查看器
tickets tickets enable you query variable tickets via command line, type: $ tickets 上海虹桥 北京 20160617 in command line, get train tickets from 上海虹桥 to 北京 in 2016-06-17: ... besides, you can specify train...
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RPy2: Combining the Power of R + Python for Data Science
This post was originally published on this blog About Matthew: Matthew is a Data Scientist at C2FO in Kansas City. He previously studied Physics for his BS at the University of Notre Dame followed by...
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