Python configuration file app. yaml

Google appengine uses an app. yaml as its important global configuration file. <Br/> each independent Google appengine application must declare such a file. </P> <p> app. yaml uses yaml as the format. People familiar with Ruby should be very familiar with the yaml format. </P> <p> required content <br/> in an app. in yaml, the following fields must be declared: </P> <p> application <br/> application is used to uniquely identify a Google appengine application. <Br/> In the development environment (using dev_appserver.py), this field is required, but its value is random. <Br/> but in the deployment environment (after the application is uploaded to the host of Google appengin), <br/> the value must be consistent with the application_id of the Google appengine you applied. </P> <p> application: MyApp <br/> version <br/> indicates the version of the Google appengine application. Similarly, in the development environment, this value is optional. </P> <p> runtime and api_version <br/> runtime and api_version indicate which version of the runtime environment the application depends on (api_version ). <Br/> currently, only python is supported, so these two values are fixed. </P> <p> runtime: python <br/> api_version: 1 <br/> handlers is used to define a series of URL handlers (similar to URL Mapping, if you are familiar with spring MVC ). <Br/> you need to assign a URL pattern for each handler (you can use a regular expression ). <Br/> once the requested URL meets the pattern, appengine submits the request to the handler object for processing. </P> <p> when processing dynamic content, use the script field. The script defines the python file path used to process the request. </P> <p> handlers: <br/>-URL :/. * <br/> Script: Main. PY <br/>-URL:/book /. * <br/> Script: Book. PY <br/> Google appengine uses the first-match priority principle when matching URL pattern. Therefore, in the above configuration, Book. py will never be used. </P> <p> Of course, you can also use <code> handler </code> to process static content, such as JavaScript scripts or CSS files. </P> <p>-URL:/JS <br/> static_dir:/path/to/jsfolder <br/>-URL:/CSS <br/> static_dir: /path/to/cssfolder <br/> static_dir indicates the directory where the static file is located. <Br/> therefore, for/JS/book/Main. js requests, Google appengine searches for/path/to/jsfolder/book/Main. js.