except exception

Idea:1. Use Excel to write the use case the first sheet page for a use case summary format as follows:The following sheet pages are for specific use-case steps:The implementation of all positioning information is separated from the test code2, read

1. Understand what exception handling isAn exception is a signal that an error occurs when the program is running (an exception occurs when the program fails, and if the program does not handle it, the exception is thrown and the program's operation

1. ReflectionMapping or modifying the state, properties, methods of a program while it is running through a stringGetAttr (OBJ,NAME_STR): Gets the memory address of the corresponding method in the Obj object according to the string name_strHasttr

in the first few chapters, we have put the basic content of Python briefly, starting from this chapter, we are the introductory level of learning, mainly the rest of the content to say, mainly including exception handling, module use, function use,

Read Catalogue F Query and Q query Transaction One, f query and Q Query 1, f queryPre-query preparation class Product (models. Model): Name = models. Charfield (Max_length=32 = models. Decimalfield (max_digits=10, Decimal_places=

#!/usr/bin/env python#-*-Coding:utf-8-*-# @CreateTime : 2018/5/29# @Author : 593703# @File : server_client.py# @Software : SC# @since : 0.0.1# @Desc : Socket server and Client# @license : Copyright (c) 2

Function Description:Gets all the files under a path, extracting the top 300 most frequently occurring characters in each file. stored in the database.Premise, you need to configure the NLTK.#!/usr/bin/python#coding=utf-8 ' function:this script

One, multi-threadedA conceptual process is an execution activity on a computer by a program. When you run a program, you start a process. Obviously, the program is Dead (static), and the process is alive (dynamic). Processes can be divided into

What ' s the anomalyThere is an exception in the Python program, which is the bug. If the exception program error, the code after the exception will not continue to execute, this is a normal program is not allowed to appear, but in some programs to

Recently in a few weeks do hand-travel crash information collection and upload, get crash information, using the HTTP POST method to upload to the company's common server, so do a simple summary. This article first introduces the HTTP protocol,

#!/usr/bin/env python#-*-Coding:utf-8-*-Import threadingImport queueImport time"""Follow the teacher's course to do a thread pool, the main idea is to carry out the task to put into the queueSeveral threads are then created to continuously retrieve

HTTP (Hypertext Transport Protocol), which is the Hypertext Transfer Protocol. This protocol details the rules for communicating with each other between the browser and the World Wide Web server.Characteristics: HTTP is called Hypertext

This article mainly introduces the Python automatic retry HTTP connection Adorner, sometimes we have to go to other interfaces to fetch data, perhaps because the network reason occasionally failed, in order to be able to automatically retry, wrote

1. The special member method of the class 1.1__doc__ represents the description information of the class1.2__module__ and __class____MODULE__ represents the object of the current operation in that module__CLASS__ represents the class to which the

Sometimes we have to go to other interfaces to fetch data, perhaps because the network reason occasionally fails, in order to be able to automatically retry, wrote such an adorner.This is the python2.7x version, python3.x can be rewritten with

Recently, do a small project often encounter python abnormal, let a person very headache, so the exception to organize, to avoid the next encounter abnormal overwhelmed, the following is the collation of the Python exception. 1.Python Exception

Many scenarios require an asynchronous callback mechanism in order not to block. This is a simple example, we refer to the use of the bar Copy Code code as follows: #!/usr/bin/env python #-*-Coding:utf-8-*- Import logging Import

Taobao official has access to merchandise promotion links API, but the API belongs to the value-added API ordinary developers do not invoke the right to apply for open Note: Landing using the Ali Mother account login is not Taobao account login

2017.8.30 Update:All engineering code upload Baidu disk. The script has now stopped developing. Engineering Code: Link: http://pan.baidu.com/s/1c1FWz76 Password: mu8k ————————————————————————————Before I begin, I'll explain my choice of solution:

The principle of Agent service is very simple, take the browser and Web server. It's a browser. Send request to B agent, b agent and then send request to C Web services, then C reponse->b->a. To write a Web proxy service you must first understand