class instance destructors are not called

[dlashua]

Test code:

class TestClass:
    def __init__(self):
        log.info('I am here')

    def __del__(self):
        log.info('I am gone')


@time_trigger('startup')
def startup():
    a = TestClass()
    task.sleep(3)
    del a

"I am gone" is never displayed.

Compare to python:

import time

class TestClass:
    def __init__(self):
        print('I am here')

    def __del__(self):
        print('I am gone')



a = TestClass()
time.sleep(3)
del a

[craigbarratt]

Good catch. Part of the issue is the __del__ method defined in pyscript is async, so the python destructor can't call it. But even with a @pyscript_compile decorator it still doesn't work, which I'm still investigating.

[craigbarratt]

It should work now. The __del__ function requires the @pyscript_compile decorator, since it needs to be a regular function. That means it can't use any pyscript features. To confirm __del__ is called I modified a global list, eg:

called = []

class TestClass:
    def __init__(self):
        log.info('I am here')

    @pyscript_compile
    def __del__(self):
        called.append("__del__")