GeezerVison

Examples:

$ ./python -m test -u network
== resources (1): network

$ ./python -m test --slow-ci
== resources: all

$ ./python -m test --fast-ci
== resources: all, -cpu


$ ./python -m test -u all,tzdata
== resources: all, +tzdata

$ ./python -m test 
== resources: all test resources are disabled, use -u option to unskip tests

@serhiy-storchaka: Does it look better like that?

Did you consider the idea of making it compatible with the input to the -u option? I.e. remove space after comma and remove plus sign.

Done.

Use sorted() for deterministic result.

Done.

I did not have problems with the older output

For me, it's not easy to know if it's default --slow-ci option, default --fast-ci option, or if -u options were modified on a buildbot. With the new output relative to -u all, it should be easier to guess the test config.