November 2020

Use Python PIL module to merge two images

Clay
2020-11-302020-11-30
Packages, PyQt5, Python

Introduction

Recently, because I have been studying the interface of the program, I got many strange problems.

I want to record today is how to merge two pictures. I found that if I simply use the composite() function in PIL, the second picture will be overwritten by the first picture. So, I started to try convert the background of the second picture to transparent.

After converting the image to a transparent background, the result of the merging is quite natural to me.

I will start to introduce how to merge two pictures in below.

[Python] Use Pillow Package To Convert The Background Into Transparent

Clay
2020-11-282021-10-13
4 Comments
Python

If we want to convert a picture background into transparent, we can use the Pillow package in Python to do it.

Clay
2020-11-272021-05-13
Others

Introduction

Notepad++ is a free open source editor, published by GPL license and it have multi-language version. In addition to writing, it can also be used to write programs.

Clay
2020-11-242020-11-24
Python

Introduction

Today I used PyInstaller to package my Python program to execute file on Windows, I got an error message:

AttributeError: module 'win32ctypes.pywin32.win32api' has no attribute 'error'

After I searching some information on Internet, I found it is a common problem about icon picture of our GUI program. The icon need to use the .ico file, but I use a .png file.

This icon is on the computer desktop dock, not the icon on the program window.

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?

November 2020

Use Python PIL module to merge two images

Introduction

[Python] Use Pillow Package To Convert The Background Into Transparent

How to auto complete code in Notepad++

Introduction

[Solved][Python] AttributeError: module ‘win32ctypes.pywin32.win32api’ has no attribute ‘error’

Introduction

[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