In python -- try except ion exception exception capture, regularization and replacement of exception values
1. Exception handling process
Exception Name:describeBaseExceptionBase class for all exceptionsSystemExitInterpreter request exitKeyboardInterruptUser interrupts execution (usually enter ^ C)ExceptionBase class for general errorStopIterationThe iterator has no more valuesGeneratorExitAn exception occurs in the generator to notify the exitStand ...
Posted by mduran on Fri, 26 Aug 2022 02:54:37 +0300
DevSecOps | extreme fox GitLab dynamic application security test (DAST) user guide
DAST is the abbreviation of Dynamic Application Security Testing, that is, Dynamic Application Security Testing. It is a kind of application security testing, which corresponds to SAST and belongs to black box testing.
Advantages of DAST
Language independent Quickly discover those vulnerable vulnerabilities (XSS, SQL Injection, etc.) ...
Posted by crackfox on Fri, 26 Aug 2022 02:00:31 +0300
python loop keywords and lists
1, Nested loop comparison (code runtime management)
In python, if we want to pursue the simplicity of the code, we need to understand that more code will take more time to run, which will reduce the work efficiency. Next, we observe the effect through python's time library
import time
start=time.time()
for x in range(0, 35):
# y stan ...
Posted by paulsiew2 on Fri, 26 Aug 2022 00:29:49 +0300
Supplementary record of sql basic syntax (to be continued 8 / 25)
I haven't done this for a long time. By the way, I was asked about it during the interview
1, distinct
1) Function
Remove duplicate items
2) Grammar
select distinct Column name from Table name;
give an example
Before use:(Here you can see that 3 repeat)
select client ID from Orders;
After use:(It can be seen here that onl ...
Posted by dlebowski on Thu, 25 Aug 2022 12:39:11 +0300
Basic java Lesson 8
catalogue
1, Specific contents
1.1 concept of polymorphism
1.2 polymorphic requirements
1.3 implementation steps of polymorphism
1.4 definition of polymorphism
2, abstract class
reflection:
2.1 abstract concepts
2.2 abstract method
3, Interface
3.1 concept of interface
3.2 definition and use of interface
3.3 contents of interface ...
Posted by ramu_rp2005 on Thu, 25 Aug 2022 09:59:23 +0300
Classic sorting algorithm
Several common sorting algorithms are listed here: 1. Selective sorting, 2. Bubble sorting, 3. Insert sorting, 4. Merge sorting, 5. Quick sorting, 6. Heap sorting, 7. Count sorting, 8. Cardinal sorting.
Catalog
1. Select Sort
2. Bubble sorting
3. Insert Sort
4. Merge Sort
5. Quick Sort
6. Heap Sorting
7. Count Sort O(N)
8. Cardinal Sor ...
Posted by slak on Thu, 25 Aug 2022 02:29:44 +0300
matplotlib draws a row and three columns graph (usually used as a document picture)
Use matplotlib to draw a parallel line graph that often appears in the literature.
Attached code, and will explain some difficult points in drawing.
catalogue
design sketch
Drawing code:
1 data tuple
2. Subplot position: subplot setting
3. Line color and legend
4. tight_layout: fill in blanks and modify spacing
design sketch
The ...
Posted by dearsina on Wed, 24 Aug 2022 10:39:26 +0300
Regular + Python: a lightweight interface documentation tool
ApiFormatMd lightweight Java interface document generation tool
characteristic
Execute Java code completely based on native code without reference to additional dependenciesGenerate MarkDown format documents. You can use ShowDoc to generate online documents
Configuration item
main.py
Author = 'River fire is like a firefly' (corre ...
Posted by maseeha on Wed, 24 Aug 2022 07:29:09 +0300
python --opencv image processing Canny operator edge detection (Roberts operator, Prewitt operator, Sobel operator, Laplacian operator, Scharr operator, LOG operator)
edge detection
Edge detection is a common method of image segmentation based on gray level mutation. Its essence is to extract the features of discontinuous parts in the image. At present, the common edge detection operators include difference operator, Roberts operator, Sobel operator, Prewitt operator, Log operator and Canny operator.
Amon ...
Posted by robot_nader on Wed, 24 Aug 2022 04:20:26 +0300
[springboot series] customize an interceptor, with source code
Spring Boot version
The version of Spring Boot on which this article is based is 2.3.4.RELEASE.
What is an interceptor?
Interceptor in Spring MVC is similar to Filter in Servlet. It is mainly used to intercept user requests and handle them accordingly. For example, the interceptor can perform permission verification, log the request informat ...
Posted by ghurtado on Tue, 23 Aug 2022 04:29:05 +0300