region_comments = models.CharField(‘说明’,max_length=250, blank=True)
增加参数blank，值为True，不设置则默认为必填
Django 使用mariadb
- 修改settings
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': '数据库名字',
'USER': '数据库用户',
'PASSWORD': '数据库密码',
'HOST': '127.0.0.1',
'PORT': '3306',
'OPTIONS': {
'charset' : 'utf8',
'use_unicode' : True,
# 'autocommit': True,
}
}
}
2. 修改__init__.py
import pymysql pymysql.install_as_MySQLdb()
Django 配置中文
修改settings.py
LANGUAGE_CODE = ‘zh-hans’
修改时区
TIME_ZONE = ‘Asia/Shanghai’
USE_TZ = False
ubuntu22.04 源
阿里源
deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
中科大源
deb https://mirrors.ustc.edu.cn/ubuntu/ jammy main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-security main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse
网易 163 源
deb http://mirrors.163.com/ubuntu/ jammy main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ jammy-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ jammy-backports main restricted universe multiverse
Conda操作命令
-
删除环境
conda remove -n your_env_name –all
-
创建环境
conda create -n your_env_name pytohn==3.6
-
退出环境
source deactivate your_env_name
-
激活环境
source activate your_env_name
-
列出所有的环境
conda info –envs
-
取消自动激活环境
conda config –set auto_activate_base false
-
自动启动某个环节
编辑 ~.bashrc
只要在此文件末尾加一行就搞定
conda activate your_envs # “your_envs”就是你的环境
-
添加国内conda 源
conda config —add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
conda config —add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
conda config —set show_channel_urls yes