Clay

[PyQt5] Use icon from QStyle

Clay
2020-11-222020-11-22
PyQt5

Introduction

When we using PyQt5 framework to develop a GUI program, we usually need some icon to display our buttons or components. Many times we can load pictures from outside, but if we need common icons, such as play icon, close icon, minimum icon … etc, we can use the built-in icon picture from QStyle module.

This has another advantage: we don’t have to worry about pictures when packing the GUI program.

Below I will introduce how to use the icons in QStyle.

Clay
2020-11-182020-11-18
Packages, Python

Python is the most popular programming language!

Introduction

Hello! Today I want to record the “pickle” module in Python. The “pickle” module is very famous module in Python, its usage is like another Python package “Json”, it can compress the data and store it. If we want to load the data we store, we can easily call the “load()” function to restore our session.

Clay
2020-11-122020-11-12
Python

Introduction

Today when I was answering a question asked by a friend, I see a filter() function in my friend’s code, and my friend just asked me what was wrong with this paragraph.

This is a awkward question. I have been learning Python for two years, but I never used this function in my program.

Clay
2020-11-102020-11-10
Packages, Python

Introduction

Whatever programming language we used, we always selected Json format to store our data.

Json (JavaScript Object Notation) is a lightweight data-interchange format, and it is readable and suitable for storing data. But in Python, sometimes we have performance bottlenecks in reading Json files, especially when the files are too large.

Clay
2020-11-092020-11-09
Database, MySQL

Introduction

I have learned about the database system and I know there are three types of database:

Database (DB)
Database Management System (DBMS)
Application

Clay
2020-11-042020-11-04
4 Comments
Others, Python

Introduction

When we used PyInstaller to create a Python program as an executable file, we usually need to display a picture in our program.

But if we used PyInstaller to make an executable file directly, we found we can’t show the picture. How does we solve this problem?

Clay
2020-10-312020-10-31
PyQt5, Python

Problem

When I using Python PyQt5 module to show image, I got an error message:

ValueError: unsupported image mode 'LA'

Clay
2020-10-302020-10-30
Python

Introduction

Today I tried to develop my side project, I found I need a function to copy the screenshot picture to system clipboard, so I researched some methods.

Clay
2020-10-242020-10-24
Others

Introduction

The birth of this article was accidental.

That’s what happened:

Today I want to speed up pure Python program
I found that I can do it with CPython
I need a test case to test CPython program
I thought of Fibonacci
I need answers to check program is correct

Clay
2020-10-202020-10-20
Others, Python

Introduction

This is a record of the error message that I have encountered: When learning a sample code provided on the Internet, it was no problem for them to use the code to cut the picture and save it in the clipboard, but when I used their sample, it show the following error message:

ModuleNotFoundError: No module named 'cStringIO'

It looks like I lacked the cStringIO module, and finally I found the answer on StackOverflow.

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Clay

[PyQt5] Use icon from QStyle

Introduction

How to use Pickle module to store data in Python

Introduction

[Python] How to use filter() function

Introduction

Using Python package “ujson” to increase Json processing speed

Introduction

MySQL download and installation steps note

Introduction

Use Python PyInstaller to make an executable file with picture

Introduction

[Solved][Python] ValueError: unsupported image mode ‘LA’

Problem

Use Python to copy pictures to the clipboard

Introduction

Fibonacci standard answer

Introduction

[Solved][Python] ModuleNotFoundError: No module named ‘cStringIO’

Introduction