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chart.setOption({ color: [ " ["username"]=> string(5) "HGNET" ["tagsname"]=> string(0) "" ["tagsid"]=> string(0) "" ["catesname"]=> string(0) "" ["catesid"]=> string(0) "" ["createtime"]=> string(10) "1641183196" ["_id"]=> string(6) "158579" } [1]=> array(10) { ["id"]=> string(6) "158620" ["text"]=> string(60) "python之gui-tkinter可视化编辑界面 自动生成代码" ["intro"]=> string(288) "目录 ECharts 异步加载 ECharts 数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具,而是在交互、性能、数据处理等方面有更高的要求。 chart.setOption({ color: [ " ["username"]=> string(7) "darkspr" ["tagsname"]=> string(0) "" ["tagsid"]=> string(0) "" ["catesname"]=> string(0) "" ["catesid"]=> string(0) "" ["createtime"]=> string(10) "1641183190" ["_id"]=> string(6) "158620" } [2]=> array(10) { ["id"]=> string(6) "158603" ["text"]=> string(66) "python3.6 +tkinter GUI编程 实现界面化的文本处理工具" ["intro"]=> string(288) "目录 ECharts 异步加载 ECharts 数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具,而是在交互、性能、数据处理等方面有更高的要求。 chart.setOption({ color: [ " ["username"]=> string(10) 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"" ["catesname"]=> string(0) "" ["catesid"]=> string(0) "" ["createtime"]=> string(10) "1641183184" ["_id"]=> string(6) "158605" } [5]=> array(10) { ["id"]=> string(5) "28228" ["text"]=> string(39) "tkinter python(图形开发界面)" ["intro"]=> string(288) "目录 ECharts 异步加载 ECharts 数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具,而是在交互、性能、数据处理等方面有更高的要求。 chart.setOption({ color: [ " ["username"]=> string(7) "yudanqu" ["tagsname"]=> string(0) "" ["tagsid"]=> string(0) "" ["catesname"]=> string(0) "" ["catesid"]=> string(0) "" ["createtime"]=> string(10) "1641183159" ["_id"]=> string(5) "28228" } [6]=> array(10) { ["id"]=> string(6) "158613" ["text"]=> string(34) "Tkinter图形界面设计(GUI)" ["intro"]=> string(288) "目录 ECharts 异步加载 ECharts 数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具,而是在交互、性能、数据处理等方面有更高的要求。 chart.setOption({ color: [ " ["username"]=> string(5) "pywjh" ["tagsname"]=> string(0) "" ["tagsid"]=> string(0) "" ["catesname"]=> string(0) "" ["catesid"]=> string(0) "" ["createtime"]=> string(10) "1641183158" ["_id"]=> string(6) "158613" } [7]=> array(10) { ["id"]=> string(6) "341361" ["text"]=> string(68) "量化分析获取数据的3种姿势(压箱底的神器Tushare)" ["intro"]=> string(288) "目录 ECharts 异步加载 ECharts 数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具,而是在交互、性能、数据处理等方面有更高的要求。 chart.setOption({ color: [ " ["username"]=> string(6) "casual" ["tagsname"]=> string(0) "" ["tagsid"]=> string(0) "" ["catesname"]=> string(0) "" ["catesid"]=> string(0) "" ["createtime"]=> string(10) "1641183069" ["_id"]=> string(6) "341361" } [8]=> array(10) { ["id"]=> string(6) "238879" ["text"]=> string(51) "面向交易的日内高频量化交易平台笔记" ["intro"]=> string(288) "目录 ECharts 异步加载 ECharts 数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具,而是在交互、性能、数据处理等方面有更高的要求。 chart.setOption({ color: [ " ["username"]=> string(18) "TaiYangXiManYouZhe" ["tagsname"]=> string(0) "" ["tagsid"]=> string(0) "" ["catesname"]=> string(0) "" ["catesid"]=> string(0) "" ["createtime"]=> string(10) "1641183067" ["_id"]=> string(6) "238879" } [9]=> array(10) { ["id"]=> 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xiaoqshuo

目录

  • Django
  • Django基础必备三件套:
  • 启动Django报错
  • 重定向是怎么回事?

1,Django

1.1 安装(安装最新LTS版)

pip install Django==1.11.16

1.2 创建一个django项目

  • 下面的命令创建了一个名为"mysite"的Django 项目:
django-admin startproject mysite

1.3 目录介绍:

mysite/
├── manage.py  # 管理文件
└── mysite  # 项目目录
    ├── __init__.py
    ├── settings.py  # 配置
    ├── urls.py  # 路由 --> URL和函数的对应关系
    └── wsgi.py  # runserver命令就使用wsgiref模块做简单的web server

1.4 运行Django项目

python manage.py runserver 127.0.0.1:8000

1.5 模板文件配置:

TEMPLATES = [
    {
        \'BACKEND\': \'django.template.backends.django.DjangoTemplates\',
        \'DIRS\': [os.path.join(BASE_DIR, "template")],  # template文件夹位置
        \'APP_DIRS\': True,
        \'OPTIONS\': {
            \'context_processors\': [
                \'django.template.context_processors.debug\',
                \'django.template.context_processors.request\',
                \'django.contrib.auth.context_processors.auth\',
                \'django.contrib.messages.context_processors.messages\',
            ],
        },
    },
]

1.6 静态文件配置

STATIC_URL = \'/static/\'  # HTML中使用的静态文件夹前缀
STATICFILES_DIRS = [
    os.path.join(BASE_DIR, "static"),  # 静态文件存放位置
]

  • 刚开始学习时可在配置文件中暂时禁用csrf中间件,方便表单提交测试。
MIDDLEWARE = [
    \'django.middleware.security.SecurityMiddleware\',
    \'django.contrib.sessions.middleware.SessionMiddleware\',
    \'django.middleware.common.CommonMiddleware\',
    # \'django.middleware.csrf.CsrfViewMiddleware\',
    \'django.contrib.auth.middleware.AuthenticationMiddleware\',
    \'django.contrib.messages.middleware.MessageMiddleware\',
    \'django.middleware.clickjacking.XFrameOptionsMiddleware\',
]

2,Django基础必备三件套

from django.shortcuts import HttpResponse, render, redirect

2.1 HttpResponse

  • 内部传入一个字符串参数,返回给浏览器。

  • 例如:

def index(request):
    # 业务逻辑代码
    return HttpResponse("OK")

2.2 render

  • 除request参数外还接受一个待渲染的模板文件和一个保存具体数据的字典参数。

  • 将数据填充进模板文件,最后把结果返回给浏览器。(类似于我们上面用到的jinja2)

  • 例如:

def index(request):
    # 业务逻辑代码
    return render(request, "index.html", {"name": "alex", "hobby": ["烫头", "泡吧"]})

2.3 redirect

  • 接受一个URL参数,表示跳转到指定的URL。

  • 例如:

def index(request):
    # 业务逻辑代码
    return redirect("/home/")

3,启动Django报错:

  • Django 启动时报错 “UnicodeEncodeError ...”
  • 报这个错误通常是因为计算机名为中文,改成英文的计算机名重启下电脑就可以了。
  • Django 启动报错“SyntaxError: Generator expression must be parenthesized”
  • 报这个错很大可能是因为使用了Python3.7.0,而目前(2018-06-12)Python3.7.0和Django还有点兼容性问题,换回Python3.6的环境即可。

4,重定向是怎么回事?

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