《从零快速搭建自己的AI网站》系列必备基础知识

# 变量赋值
a = 10           # 整数
b = 3.14         # 浮点数
c = "Hello"      # 字符串
d = True         # 布尔值

# 打印变量
print(a, b, c, d)

# 列表
list1 = [1, 2, 3, "Python"]
print(list1)

# 元组
tuple1 = (1, 2, 3, "Python")
print(tuple1)

# 字典
dict1 = {"name": "Alice", "age": 25}
print(dict1)

# 条件语句
x = 10
if x > 5:
    print("x 大于 5")
elif x == 5:
    print("x 等于 5")
else:
    print("x 小于 5")

# 循环语句
for i in range(5):
    print(i)

i = 0
while i < 5:
    print(i)
    i += 1

# 定义函数
def greet(name):
    return f"Hello, {name}!"

# 调用函数
print(greet("Alice"))

pip install django

django-admin startproject myproject
cd myproject

python manage.py startapp myapp

# 在 myapp/views.py 中定义视图
from django.http import HttpResponse

def hello(request):
    return HttpResponse("Hello, Django!")

# 在 myproject/urls.py 中配置 URL
from django.contrib import admin
from django.urls import path
from myapp.views import hello

urlpatterns = [
    path('admin/', admin.site.urls),
    path('hello/', hello),
]

# 在 myapp/models.py 中定义模型
from django.db import models

class Person(models.Model):
    name = models.CharField(max_length=100)
    age = models.IntegerField()

# 在 myapp/admin.py 中注册模型
from django.contrib import admin
from .models import Person

admin.site.register(Person)

docker pull ubuntu

docker run -it ubuntu

docker ps

docker stop <container_id>

docker rm <container_id>

docker rmi <image_id>

# 选择基础镜像
FROM ubuntu:latest

# 维护者信息
MAINTAINER your_name

# 安装依赖
RUN apt-get update && apt-get install -y python3 python3-pip

# 复制应用代码
COPY . /app

# 设置工作目录
WORKDIR /app

# 暴露端口
EXPOSE 8080

# 运行应用
CMD ["python3", "app.py"]

docker build -t myapp .

pip install docker-compose

version: '3'
services:
  web:
    image: nginx
    ports:
      - "8080:80"
  db:
    image: mysql
    environment:
      MYSQL_ROOT_PASSWORD: example

docker-compose up

docker-compose down

docker-compose ps

docker-compose logs

docker-compose up --scale web=3