Task exception was never retrieved
future: <Task finished coro=<test.<locals>.io_operation() done, defined at c:/Users/jvarus/Desktop/test.py:40> exception=ZeroDivisionError('float division by zero',)>
Traceback (most recent call last):
  File "c:/Users/jvarus/Desktop/test.py", line 41, in io_operation
    async with semaphore:
  File "c:/Users/jvarus/Desktop/test.py", line 22, in __aenter__
    cur_rate = len(self.call_times) / (self.loop.time() - self.call_times[0])
ZeroDivisionError: float division by zero
Task exception was never retrieved
future: <Task finished coro=<test.<locals>.io_operation() done, defined at c:/Users/jvarus/Desktop/test.py:40> exception=ZeroDivisionError('float division by zero',)>
Traceback (most recent call last):
  File "c:/Users/jvarus/Desktop/test.py", line 41, in io_operation
    async with semaphore:
  File "c:/Users/jvarus/Desktop/test.py", line 22, in __aenter__
    cur_rate = len(self.call_times) / (self.loop.time() - self.call_times[0])
ZeroDivisionError: float division by zero
Task exception was never retrieved
future: <Task finished coro=<test.<locals>.io_operation() done, defined at c:/Users/jvarus/Desktop/test.py:40> exception=ZeroDivisionError('float division by zero',)>
Traceback (most recent call last):
  File "c:/Users/jvarus/Desktop/test.py", line 41, in io_operation
    async with semaphore:
  File "c:/Users/jvarus/Desktop/test.py", line 22, in __aenter__
    cur_rate = len(self.call_times) / (self.loop.time() - self.call_times[0])
ZeroDivisionError: float division by zero
Task exception was never retrieved
future: <Task finished coro=<test.<locals>.io_operation() done, defined at c:/Users/jvarus/Desktop/test.py:40> exception=ZeroDivisionError('float division by zero',)>
Traceback (most recent call last):
  File "c:/Users/jvarus/Desktop/test.py", line 41, in io_operation
    async with semaphore:
  File "c:/Users/jvarus/Desktop/test.py", line 22, in __aenter__
    cur_rate = len(self.call_times) / (self.loop.time() - self.call_times[0])
ZeroDivisionError: float division by zero
Desired QPS: 1 Achieved QPS: 333.11125916055965