Traceback (most recent call last):
File "...\electrum\electrum\util.py", line 988, in wrapper
return await func(*args, **kwargs)
File "...\electrum\electrum\interface.py", line 334, in wrapper_func
return await func(self, *args, **kwargs)
File "...\electrum\electrum\interface.py", line 358, in run
await self.open_session(ssl_context)
File "...\electrum\electrum\interface.py", line 465, in open_session
await group.spawn(self.monitor_connection)
File "...\aiorpcX\aiorpcx\curio.py", line 242, in __aexit__
await self.join()
File "...\aiorpcX\aiorpcx\curio.py", line 208, in join
await self.cancel_remaining()
File "...\aiorpcX\aiorpcx\curio.py", line 221, in cancel_remaining
await task
File "...\electrum\electrum\synchronizer.py", line 81, in _start_tasks
await group.spawn(self.main())
File "...\aiorpcX\aiorpcx\curio.py", line 242, in __aexit__
await self.join()
File "...\aiorpcX\aiorpcx\curio.py", line 211, in join
raise task.exception()
File "...\electrum\electrum\synchronizer.py", line 109, in subscribe_to_address
await self.session.subscribe('blockchain.scripthash.subscribe', [h], self.status_queue)
File "...\electrum\electrum\interface.py", line 137, in subscribe
result = await self.send_request(method, params)
File "...\electrum\electrum\interface.py", line 115, in send_request
timeout)
File "C:\Users\User\AppData\Local\Programs\Python\Python37\lib\asyncio\tasks.py", line 388, in wait_for
return await fut
File "...\aiorpcX\aiorpcx\session.py", line 525, in send_request
return await self._send_concurrent(message, future, 1)
File "...\aiorpcX\aiorpcx\session.py", line 503, in _send_concurrent
self._recalc_concurrency()
File "...\aiorpcX\aiorpcx\session.py", line 423, in _recalc_concurrency
target = int(0.5 + max(floor, min(cap, current * self.target_response_time / avg)))
ZeroDivisionError: float division by zero
The cause is that two subsequent close time.time() calls can have identical results.
On Windows, this seems quite likely actually:
PS Q:\prog\misc\electrum_ws\electrum> python3.7-64
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import time
>>> [time.time() for i in range(10)]
[1572379481.460693, 1572379481.460693, 1572379481.460693, 1572379481.460693, 1572379481.460693, 1572379481.460693, 1572379481.460693, 1572379481.460693, 1572379481.460693, 1572379481.460693]
>>> 10 * [_[0]] == _
True
but even on Ubuntu, it sometimes happens:
$ python3
Python 3.6.8 (default, Oct 7 2019, 12:59:55)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import time
>>> [time.time() for i in range(10)]
[1572379591.2279305, 1572379591.227931, 1572379591.2279315, 1572379591.2279317, 1572379591.2279317, 1572379591.2279322, 1572379591.2279325, 1572379591.2279327, 1572379591.227933, 1572379591.2279334]
>>> _[3] == _[4]
True
Trace:
The cause is that two subsequent close
time.time()calls can have identical results. On Windows, this seems quite likely actually:but even on Ubuntu, it sometimes happens: