There are six tables in the online library with duplicate data, two of which are relatively large, one 960000 + and one 300000 +. Because the same problem has been handled before, we directly brought the last Python de duplication script. The script is very simple, that is, connect to the database, find out the dupli ...
Posted by durahman on Sun, 28 Nov 2021 13:09:09 -0800
The main contents are: boundary filling cv2.copyMakeBorder(), numerical calculation cv2.add(), change size cv2.resize(), image fusion cv2.addWeighted(), image threshold cv2.threshold()
Before we start, let's import the images, which we need in the img. An image display function is defined to facilitate the next dra ...
Posted by hybmg57 on Sun, 28 Nov 2021 12:41:50 -0800
1. Exception handling
The difference between Error and Exception:
Error is a system error that programmers cannot change or handle, such as a system crash, insufficient memory, method call stack overflow, etc. In the event of such an error, it is recommended that the program be terminated.
Exception indicates an exception that the progra ...
Posted by rofl90 on Sun, 28 Nov 2021 11:24:00 -0800
1. Using beautiful soup
First, import the requests module and the beautiful soup module. Click on the lower left corner. Open the interpreter settings and search for the module you want to import.
[the external chain image transfer fails. The source station may have an anti-theft chain mechanism. It is recommended to save the image and upload ...
Posted by TheChief on Sun, 28 Nov 2021 08:36:38 -0800
2.9.1 PO design mode
Before talking about Pytest, let's take a look at what is the PO (Page Object) design pattern. Why reference PO design patterns? PO provides a mode of separating business process from page element operation, which makes the test code clearer. PO (Page Object) Page Object model is a design pattern used to manage and maintai ...
Posted by mverrier on Sun, 28 Nov 2021 07:14:29 -0800
What are Python's support modules for concurrent programming?
Module nameeffectthreadingRealize multithreading, and make use of the principle that the computer CPU and IO can execute at the same time, so that the CPU can access another task during the computer IO operation.multprocessingmultprocessingasyncioRealize asynchronous IO, and realize ...
Posted by gillypogi on Sun, 28 Nov 2021 07:02:26 -0800
Platform: windows10Interpreter: Python 3.7
There is an existing excel document containing target data. You need to replace the corresponding content of each line of data in the specified word and save it one by one.
First, check the word document format. You can see that the file suffix is. doc. What n ...
Posted by Pellefant on Sun, 28 Nov 2021 00:31:55 -0800
Note: all topics are in one blog hey 😎
Level 1: sequential structure
Task description The most basic structure of the program is the sequential structure. The sequential structure is that the program executes each statement from top to bottom according to the statement order.
This level requires learners to understand the sequential struc ...
Posted by swamp on Sun, 28 Nov 2021 00:18:53 -0800
Original text: https://jishuin.proginn.com/p/763bfbd32655
In this article, I'll show you some of the techniques I think are most important for Python to format string f-string. You will learn a variety of ways to format strings through various examples. Overall, you'll see 73 examples of how to use f-string perfectly.
List of contents
1. Wh ...
Posted by LuiePL on Sat, 27 Nov 2021 23:50:33 -0800
1. Send request
Comparison between urlopen and Request
Use Request for flexible configuration
Use of agents
In Python 2, there are urllib and urllib libraries to send requests. In ...
Posted by feri_soft on Sat, 27 Nov 2021 23:32:30 -0800