[feature] error reporting line number

[pjm-tusimple]

is it possible for the errors to throw a line in the yaml file? Knowing where the exception was thrown will help a lot.

[kvid]

As far as I know, pyyaml does not support line numbers out of the box, but it might be possible via subclassing. However, an easier approach, is to specify node name and other context to locate the root cause, similar to suggestions in #207.

[pjm-tusimple]

As far as I know, pyyaml does not support line numbers out of the box, but it might be possible via subclassing. However, an easier approach, is to specify node name and other context to locate the root cause, similar to suggestions in #207.

Yes, it does look similar. Thanks for pointing that out.