684f3be000
In debug mode, BaseEventLoop._run_once() now sets the BaseEventLoop._current_handle attribute to the handle currently executed. In release mode or when no handle is executed, the attribute is None. BaseEventLoop.default_exception_handler() displays the traceback of the current handle if available.
45 lines
830 B
Python
45 lines
830 B
Python
"""Crude demo for print_stack()."""
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from asyncio import *
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@coroutine
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def helper(r):
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print('--- helper ---')
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for t in Task.all_tasks():
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t.print_stack()
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print('--- end helper ---')
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line = yield from r.readline()
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1/0
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return line
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def doit():
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l = get_event_loop()
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lr = l.run_until_complete
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r, w = lr(open_connection('python.org', 80))
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t1 = async(helper(r))
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for t in Task.all_tasks(): t.print_stack()
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print('---')
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l._run_once()
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for t in Task.all_tasks(): t.print_stack()
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print('---')
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w.write(b'GET /\r\n')
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w.write_eof()
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try:
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lr(t1)
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except Exception as e:
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print('catching', e)
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finally:
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for t in Task.all_tasks():
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t.print_stack()
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l.close()
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def main():
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doit()
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if __name__ == '__main__':
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main()
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