to using signal.alarm(1) instead of signal.setitimer(signal.ITIMER_REAL, 0.1).

This is an attempt to see if this change is what caused the ubuntu arm buildbot
to hang in test_io's test_interrupted_write_retry_text.
Discussion in Issue #12268.

to using signal.alarm(1) instead of signal.setitimer(signal.ITIMER_REAL, 0.1).

This is an attempt to see if this change is what caused the ubuntu arm buildbot
to hang in test_io's test_interrupted_write_retry_text.
Discussion in Issue #12268.

Fixes issue 15039: namespace packages are no longer imported in preference to modules of the same name.

plain tuple to a collections.namedtuple.

leads to failures in successive 64-bit/32-bit builds in the same shell window.