为什么要使用flask open_resource [英] Why use flask open_resource

问题描述

在阅读flask api文档时，我遇到了这样的open_resource方法，该方法打开文件

while reading flask api documentation, I came across this open_resource method that opens file, like this

with app.open_resource('schema.sql') as f:
contents = f.read()
do_something_with(contents)

但是为什么不这样做呢?

but why not just do this?

with open('schema.sql') as f:
contents = f.read()
do_something_with(contents)

我想看看一个用例，其中app.open_resource可以执行open尚未执行的操作

I want to see a use case where app.open_resource could do something that open can't already do

推荐答案

来自

从应用程序的资源文件夹中打开资源.

Opens a resource from the application’s resource folder.

使用 app.open_resource ，路径始终相对于应用程序的根(资源)文件夹.它们只能打开以供读取，因为能够在生产环境中写入应用程序文件会很糟糕.

With app.open_resource, paths are always relative to the app's root (resource) folder. They may only be opened for reading, since it would be bad to be able to write to application files in production.

使用 open ，相对路径相对于当前目录.文件可以以任何方式打开.

With open, relative paths are relative to the current directory. Files may be opened in any mode.

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