How would i make this lib portable? (single/multi core boards)

[GM-Script-Writer-62850]

I made a lib multicore safe, but I assume _thread is not present on single core boards so importing it would cause a error

from _thread i am using allocate_lock and using acquire/release on the lock

• I am using a lock to make sure 2 or more cores do not try to write over SPI at the same time as doing that would cause unexpected results

is this what i should do? so it will also run a single core board?

try:
    from _thread import allocate_lock
except:
    class allocate_lock:
        def acquire():
            return
        def release():
            return

[peterhinch]

That looks OK. Note that _thread may be present on single core boards. For example there is an option of threaded builds for STM (Pyboards).