PyQt -> Django + Next.js
The customer’s computer environment is quite complex, with machines running Windows 7, Windows 10, and Windows 11. Although the PyQt application we developed works on about 90% of these systems, …
Bottle cap optical inspection
There are five types of bottle cap defects Create Shape Model, Golden Image, and Mask Image Optical inspection process flow Create Shape Model Save Golden Images Save Mask Image Dirty …
Django Optimistic Locking (樂觀鎖定)
current in process record the version will be update += 1, so when in the same time another one do same thing will updated_rows == 0.
Django Pessimistic Locking (悲觀鎖定)
when select task by id, the database lock the record. if other one to do same time the second one will get the “Task is already claimed or completed” We …
Django Views
^: indicating the begin $: indicateing the last [0-9]{4}: 4 characters and each character is 0~9. (?P<by_date>…….), will pass the value as by_date parameter to the view. r preceding the …
Use Docker-Compose to help Django Development
cd ~ mkdir practice_folder #create a virtualenv python -m venv .venv .venv\scripts\activate.bat pip install django~=4.0.0 psycopg2-binary~=2.9.9 django-admin startproject django_project . python manage.py runserver 0.0.0.0:8000 pip freeze > requirements.txt create a …
Dockerfile for pyenv environment
FROM ubuntu:20.04 ENV TZ = Asia\Taipei ENV DEBIAN_FRONTEND=noninteractive RUN apt-get update && \apt-get install -y \build-essential \libssl-dev \zlib1g-dev \libbz2-dev \libreadline-dev \libsqlite3-dev \wget \curl \llvm \libncurses5-dev \libncursesw5-dev \xz-utils \tk-dev \libffi-dev \liblzma-dev …