> For the complete documentation index, see [llms.txt](https://yeasy.gitbook.io/openstack_code_neutron/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yeasy.gitbook.io/openstack_code_neutron/neutron/common/exceptionspy.md).

# exceptions.py

定义了各种情况下的异常类，包括NetworkInUse、PolicyFileNotFound等等。