I am currently trying investigate tests failures on HP-UX to port some engineering applications away from Fortran to Python, but a bunch of tests require outbound connection which I do not have. I do have an HTTP proxy only.

Please add something to TESTOPTS, e.g., '-o' (offline) to skip test. I'd like to focus on the real test failures.

You can run all the tests except the ones that require external network (like SSL for sockets) using:

./python -m test -uall,-network

or you can exclude tests using the -x flag.

That looks promising, I figured out that there is "./python -m test -h".

make test TESTOPTS="-uall,-network" works flawlessly.

I would have expected a link to https://devguide.python.org/runtests/ from https://github.com/python/cpython/blob/master/README.rst#testing.

So my request is just to update the rst file.

An additional motivation for the change is that the instructions in the Testing section of the README are make based while the devguide section gives the OS- and version-specific 'python' based commands.

New changeset cae8ff93a696aa7d74562a9eeaf27afac1f181b4 by Terry Jan Reedy (Michael Osipov) in branch 'master':
bpo-34381: refer to 'Running & Writing Tests' in README.rst (GH-8797)
https://github.com/python/cpython/commit/cae8ff93a696aa7d74562a9eeaf27afac1f181b4

New changeset 4d4d23d8317fbc95eec789f349dd1db4c0b24fc3 by Miss Islington (bot) in branch '3.6':
bpo-34381: refer to 'Running & Writing Tests' in README.rst (GH-8797)
https://github.com/python/cpython/commit/4d4d23d8317fbc95eec789f349dd1db4c0b24fc3

New changeset eeece3cd331a1f57fabd55e026f2ea26bc43333c by Miss Islington (bot) in branch '3.7':
bpo-34381: refer to 'Running & Writing Tests' in README.rst (GH-8797)
https://github.com/python/cpython/commit/eeece3cd331a1f57fabd55e026f2ea26bc43333c

Closing this does not preclude the optional addition and merge of a PR for 2.7.