Support multiple API versions in flask

problem ：

I started to design a RESTful webservice with Flask and Python and I'm wondering how one would support multiple API versions in the same project. I started using it Flask and Python To design a RESTful web service , I want to know how to support multiple in the same project API edition .I'm thinking of putting the requested API version in the URL like this: I'm considering the request API The version is in URL in , As shown below ：

/myapp/v1/Users

After some time I want to add another endpoint in Version 1.1 of the API and keep everything from v1 which did not change: After a while , I want to API Of 1.1 Add another endpoint in version , And keep v1 Everything unchanged in ：

/myapp/v1.1/Users   <= Same as in v1/myapp/v1.1/Books

In v2 the "Users"-endpoint is changed: stay v2 in ,“ user ” Endpoint changed ：

/myapp/v2/Users   <= Changed in v2/myapp/v2/Books   <= Same as in v1.1

and so on... wait ...

Looking at this question the easiest way probably would be something like this: see This The simplest way to solve the problem may be like this ：

@app.route('/<version>/users')def users(version):    # do something    return jsonify(response)

But I can imagine that this will get harder to maintain with each new API version. But I can imagine , With every new API edition , This will become more difficult to maintain .Therefore I was wondering if there's any better (= easier to maintain and better structured) way to achieve this with Flask? So I want to know if there is a better （= Easier to maintain and better structured ） Method to use Flask To achieve this goal ？

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Solution ：

Reference resources ： https://stackoom.com/en/question/1wp2X