展开werkzeug useragent类 [英] expand werkzeug useragent class

问题描述

我想用另一个浏览器扩展werkzeug UserAgent类。我怎样才能不修改werkzeug库的源代码？我是新来的python，所以我有关于mixin，继承，模块等的小想法。
我在文档中发现：

lockquote

创建BaseRequest的自定义子类并添加缺少的功能是个好主意通过mixin或直接执行。这里是这样一个子类的例子：

  from werkzeug.wrappers import BaseRequest，ETagRequestMixin 
 class Request（BaseRequest，ETagRequestMixin）：
 pass 
  

我把这个和如何扩展标准的UserAgent类？另外我用烧瓶与werkzeug。提前致谢。

解决方案

惊人的。一旦你提出问题，答案就会出现：）

     from werkzeug.wrappers import BaseRequest，ETagRequestMixin 
 $ b $ class Request（BaseRequest，ETagRequestMixin）：
 pass 
 $ b $ app = Flask（__ name__）
 app.request_class =请求
  

I want to expand werkzeug UserAgent class with one more browser. How can I do it without modifying the source code of werkzeug library? I'm new in python so I have small idea about mixins, inheritance, modules and so on. I've found in docs:

It’s a good idea to create a custom subclass of the BaseRequest and add missing functionality either via mixins or direct implementation. Here an example for such subclasses:

from werkzeug.wrappers import BaseRequest, ETagRequestMixin
class Request(BaseRequest, ETagRequestMixin):
    pass

At which part of my code should I put this and how to expand standart UserAgent class? Also I'm using werkzeug with Flask. Thanks in advance.

解决方案

Amazing. Once you ask question the answer comes up itself :)

Flask.request_class is the answer:

from werkzeug.wrappers import BaseRequest, ETagRequestMixin

class Request(BaseRequest, ETagRequestMixin): 
    pass

app = Flask(__name__)
app.request_class = Request

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