python - alembic - 使用包资源作为 script_location 的示例

Question

我正在尝试将 Alembic 迁移作为 python 包分发的一部分。由于将安装此发行版，Alembic 脚本目录(包含迁移)最终将被复制到 python 包文件夹。在这种情况下，我如何告诉 Alembic 在哪里可以找到这个目录？

在 Alembic 文档中，它说 migration 目录可以在 config.ini 文件中指定为包引用:

• script_location - this is the location of the Alembic environment. It is normally specified as a filesystem location, either relative or absolute. If the location is a relative path, it’s interpreted as relative to the current directory.

(剪断)

For support of applications that package themselves into .egg files, the value can also be specified as a package resource, in which case resource_filename() is used to find the file (new in 0.2.2). Any non-absolute URI which contains colons is interpreted here as a resource name, rather than a straight filename.

文档没有提供更多信息或示例。

有没有人成功实现过这个？您究竟如何将 migration scripting_folder 转换为“包资源”？那么您如何告诉 alembic 在哪里可以找到它？

Answer 1

例如:

script_location = mypackage:somewhere/inside/it

这要求您将迁移包含在您的发行版中:您应该查看您的 MANIFEST.in 文件等。