Install PyMySql template
pip install pymysql
Configure MySQL connection parameters
pymysql.Connect()
host , Post, user, passwd, db, charset
Get cursor() object
c
Month: October 2021
C # Standard IDSPOSE mode
.net’s GC mechanism has two problems: First, GC cannot release all resources, and it cannot release unmanaged resources. Secondly, GC is not real-time, and all GCs are uncertain.
In order to solve
C # Static class single case mode comparison
The company’s classes need to be implemented in a singleton mode, which can save resources and avoid the generation of duplicate objects. But the static class can also do this, and it is more conci
C # Epplus export, set cell format, set column header style, set cell grid box, formatted date
//Data source DataTable
DataTable dataTable = new DataTable();
//…
//…
ExcelPackage package = new ExcelPackage();
//Create Sheet
ExcelWorksheet workSheet = package.Workbook.Worksheets
[PAT Level] 1032 Sharing (25 points)
Title:
Enter the starting address of two words and a positive integer N (<=1e5), and then enter N lines of data, each line includes a five-digit letter address, The address of the letter and
MySQL Database Application (5) SQL Language (2)
3. Delete redundant accounts in the MySQL system
Syntax: drop user “user “@”Host Domain” <----Pay attention to the quotation marks, which can be single or double quotation marks, but they can
C # uses the CEF3 to take the list of Jingdong keyword product list, take the mobile phone as an example
Using c#’s cef3 to simulate browser operations, grab the list of keywords in the Jingdong Mall.
Get the product title, product id, product link, product price
public partial class Form1
C # windows forms make Messagebox top layers –XDD
Method 1.
MessageBox.Show(“Text”, “Caption”, MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.ServiceNotification);< /pre> Method 2.
How do I determine if I have canceled C objects?
I have an answered previous question in which I described the difficulty of catching exceptions when I try to access an object that has been released by a third-party function. The function sometim
C # – How to get an instance of BackgroundWorker from the currently executed method?
I’m using a background worker program that can have n instances. The problem is that the DoWork method (with the’sender’ parameter, that is, BackgroundWorker) calls other codes that generate the ca