Detailed explanation of the exception retry solution in Python, and detailed explanation of the python Solution
Preface
During data capturing, you often encounter program storage problems due to network problems. Previously, you only recorded the error content and processed the error content later.
Original Process:
def crawl_page(url): pass def log_error(url): pass url = ""try: crawl_page(url)except: log_e
Solution to deadlock in Oracle Data Tables: oracle Solution
During database management, tables are often locked due to some unreasonable operations on data tables. The following describes how to find which tables are locked by which users, and how to unlock:1. Find the locked table:
select object_name,session_id,os_user_name,oracle_username,process,locked_mode,status from v$locked_object l, all_objects a wh
About the MIUI floating window permission solution, miui floating Solution
Let's get started .... I haven't written a Blog for a long time .... this time is a little busy... busy ..... I don't feel like I'm busy ..... seriously affecting the quality of life ...... happiness Index of life !!!..... It's still a singleton !!! Please introduce ......
MIUI is my favorite ROM .... although there are a lot of unha
Public WIFI solution for IOS clients and ioswifi SolutionI. Overview of Public WIFI
Nowadays, many companies are doing free WIFI, such as stations, buses, subways, and restaurants. WIFI is available in areas with intensive flow of personnel, free WIFI has gradually shifted from the original Web authentication method to the client authentication method. This article mainly discusses solutions for accessing the Internet through IOS authentication. The f
Object-covered div solution: objectdiv Solution
Recently I made a web project, because there is a (1) first, we will introduce the object tag: W3school.
Definition and usage
Defines an embedded object. Use this element to add multimedia to your XHTML page. This element allows you to specify the data and parameters of objects inserted into the HTML document, as well as code that can be used to display and ma
ARC-circular reference-solution, arc-reference solution
1. The most common type of code for loop reference.
-(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. optional * firstArray = [[NSMutableArray alloc] init]; NSMutableArray * secondArray = [[financialloc] init]; [firstArray addObject: secondArray]; [secondArray addObject: firstArray];}
provider scale and intensive development.At the same time, the dispersion of customer industry and the dispersion of demand, greatly improved the service difficulty of IDC services and MA, the so-called tune, in the face of different industries and needs, two types of service providers are found to be difficult to deal with.On the other hand, the vast majority of enterprise customers are very difficult to find a unique, can provide a service provider leading brand, that is because today, IDC an
Whether you are Innod engine limit paging slow or myisam engine limit paging slow , everyone select query paging This is generally the "data total 20,000, you need to query 3 fields": SELECT ' id ', ' url ', ' content ' from ' product ' WHERE 1ORDER by ' id ' LIMIT 10000, 100The execution speed is:45.7Seconds Haha, slow down the slag! Author let again grand Recommendation MYSQL LIMIT Paging Query accelerates the tool solution:http://my.oschina.net/cart/ Select ' id ', ' url ', ' content
Say a lot of beginners (for example, I) have encountered the solution of the problem, of course, this solution leads to another problem, solve!!
Everyone (super beginner), is not all tried PHP can not parse, that is, the PHP file opened with the browser, the HTML content inside the normal parsing display, but the PHP code can only be shown as the source code, Even if you have passed the ordinary people can
applications to all terminal physical workstations, the new approach--citrix Virtual desktop solutions to provide users with a secure desktop design environment without the time and expense associated with large-scale publishing of desktops and securing data security.
A virtual desktop is a desktop operating system that is a virtual operating system running on a server. In Virtual desktop mode, everyone enjoys their own operating system. brings a number of benefits to virtualization of desktop
C. Score matrix question description and solution; score matrix question Solution Score MatrixDescription
We define the following matrix:
1/1 1/2 1/3
1/2 1/1 1/2
1/3 1/2 1/1
The elements on the diagonal line of the matrix are always 1/1, and the denominator of the scores on both sides of the diagonal line increases one by one.
The sum of the requested matrices.
Input
Given an integer N (N
Output
Html5 page return mechanism solution, html5 Mechanism Solution
Response scenarios to be processed:
1. Normal a-> B-> c
2. the button on the page needs to be logged on
3. Page jump requires login
4. modifiable parts on the page (for example, the address page can also be added, deleted, modified, and queried)
The overall principle is that the original road is back to the original road
The first scenari
Bonobo creates a new database with an error. Solution: bonobo solution.
An error occurred while creating a new database:
Native library pre-loader is trying to load native SQLite library "D: \ wwwroot \ localhost \ xxx \ bin \ x86 \ SQLite. interop. dll "...w3wp.exe Error: 0: Error occured and caught in Global. asax-LibGit2Sharp. nameConflictException: Failed to make directory 'd:/wwwroot: the file cannot b
Sqlserver because the selected user has an object, the solution for this user cannot be removed. sqlserver Solution
Symptom:Restore the database that was backed up to the current SQL database. Now, you need to delete the user in the database, but the result shows that the user cannot be removed because the selected user has an object.Solution:1. Open the Enterprise Manager, expand the server, right-click t
New UI solution of CSS3 and UI solution of CSS3
Border-radius rounded corner
The parameter value can be pixel or percentage.The range of a parameter is four.When two parameters are used, the range is upper left, lower right, and lower right.When the three parameters are used, the range is top left, top right, bottom left, and bottom right.When the four parameters are used, the range is top left, top right,
Web security solution and web System Security Solution
What is. NET FrameworkSecurity?. NET Framework provides a user and code security model that allows you to restrict operations that can be performed by users and code. To program role-based security and code access security, you canSystem. SecurityType used in the namespace .. NET Framework also providesSystem. Security. CryptographyNamespace: supports
ORA-01810 format code appears twice solution, ora-01810 Solution
When you make a query page this morning, you need to query the spans of two time ranges. Use the TO_DATE function and write it at the beginningSQL codeTO_DATE ('2017-08-04 00:00:00 ', 'yyyy-MM-DD HH: mm: ss ')
The result reported that the ORA-01810 format code had two errors. After the query, it was found that there was a problem with the for
/*
Beginner functions, trainer;
*/
Primary function solution:
/* Integer Splitting Method for integer n. The question is: Calculate numbers 1, 2, 3 ,...... N; each number can be infinitely selected, and the total number of functions (1 + x ^ 2 + x ^ 3…) that can constitute n can be obtained ......) (1 + x ^ 2 + x ^ 4 ......) (1 + x ^ 3 + x ^ 6 + x ^ 9 ......) ...... The meaning of the first item is: Take 0 1, take 1 1, 2 1, 1 ...... The meaning of th
Android activation key failure to start the mobile phone solution, android SolutionProblem description
The Android phone's key is damaged and cannot be started.
Solution
Connect your mobile phone to your computer through USB cable, go to the command line, find the directory where the adb command is located, and run the following command:
Adb reboot
Copyright Disclaimer: This article is an origi
Android notification bar immersive/transparent complete solution, incomplete root solution
Reprinted please indicate the source: http://www.cnblogs.com/cnwutianhao/p/6640649.html
References: https://github.com/ljgsonx/adaptiveStatusBar
Google added a translucent interface style to Android 4.4 and introduced the Material Design concept in Android 5.0.
The addition of these styles makes the originally rigid
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