python 2 里面的下载实现. https://stackoverflow.com/questions/666022/what-errors-exceptions-do-i-need-to-handle-with-urllib2-request-urlopen https://stackoverflow.com/questions/3256576/catching-http-errors…

参考: https://www.youtube.com/watch?v=8kTlzR4HhWo https://github.com/miguelgrinberg/merry 背景 本文实际就是把 doc 翻译了下, 笔记用, 建议直接到 github 看源码, 并不复杂 撸码的时候就发现, 异常处理会很大的影响程序的观感, 本不复杂的业务逻辑嵌套在异常处理中, 不够优美, 就想到把异常处理的逻辑搁到装饰器中 用装饰器很爽, 但是又发现, 几乎每个IO函数都顶着一个装饰器, 确实不雅观, 想了想…

我用的是python2.7   我搜网上10054错误解决方法的时候发现,大部分文章都是以python3为基础的,对于python2不适用. python socket.error: [Errno 10054]  远程主机强迫关闭了一个现有的连接. 原因:服务器发现你的爬虫行为了,所有强制断开链接了 解决办法:  服务器知道你是爬虫,加headers, 模拟浏览器agent:head中有一个user-agent每次都换不同的模拟代理 #coding:utf-8 import urllib2 ur…

Error Handling Elements in Apache Beam Pipelines Vallery LanceyFollow Mar 15 I have noticed a deficit of documentation or examples outside of the official Beam docs, as data pipelines are often intimately linked with business logic. While working wit…

Erlang error handling Contents Preface try-catch Process link Erlang-way error handling OTP supervisor tree Restart process 0. Preface 说到容错处理,大概大家都会想到 try-catch 类结构,对于绝大多数传统语言来说,确实是这样.但是对于Erlang来说,容错处理是其一个核心特性,真正涉及到的是整个系统的设计,与 try-catch 无关:其核心是Erlang…

Summary: this tutorial shows you how to use MySQL handler to handle exceptions or errors encountered in stored procedures. When an error occurs inside a stored procedure, it is important to handle it appropriately, such as continuing or exiting the c…

目录 . 应用场景 . Use Case Code Analysis . 和setjmp.longjmp有关的glibc and eglibc 2.5, 2.7, 2.13 - Buffer Overflow Vulnerability 1. 应用场景 非局部跳转通常被用于实现将程序控制流转移到错误处理模块中:或者是通过这种非正常的函数返回机制,返回到之前调用的函数中 . setjmp.longjmp的典型用途是异常处理机制的实现:利用longjmp恢复程序或线程的状态,甚至可以跳过栈中多层的函…

Use Exceptions Rather Than Return Codes Back in the distant past there were many languages that didn't have exceptions.In those languages the techniques for handling and reportiing errors were limited.You either set an error flag or returned an error…

原文@http://software-engineer.gatsbylee.com/python-pip-error-invalid-command-bdist_wheel/ Python pip – error: invalid command ‘bdist_wheel’ 环境 python-setuptools 0.6.10 from CentOS 6 Base pip 7.1.0 from https://bootstrap.pypa.io/get-pip.py python 2.6 问题…

python urllib2使用心得 1.http GET请求 过程:获取返回结果,关闭连接,打印结果 f = urllib2.urlopen(req, timeout=10) the_page = f.read() f.close() print the_page 2.http GET请求 + 包头 paras = "Token=1234567890;Uuid=0987654321" url = http://www.cnblogs.com/shhnwangjian send_hea…