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"""Crude demo for print_stack()."""
from asyncio import *
@coroutine
def helper(r):
print('--- helper ---')
for t in Task.all_tasks():
t.print_stack()
print('--- end helper ---')
line = yield from r.readline()
1/0
return line
def doit():
l = get_event_loop()
lr = l.run_until_complete
r, w = lr(open_connection('python.org', 80))
t1 = async(helper(r))
for t in Task.all_tasks(): t.print_stack()
print('---')
l._run_once()
for t in Task.all_tasks(): t.print_stack()
print('---')
w.write(b'GET /\r\n')
w.write_eof()
try:
lr(t1)
except Exception as e:
print('catching', e)
finally:
for t in Task.all_tasks():
t.print_stack()
l.close()
def main():
doit()
if __name__ == '__main__':
main()
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