python-3.4

Using Python 3.4.1 on Windows, I've found that while executing an asyncio event loop , my program can't be interrupted (i.e. by pressing Ctrl+C in the terminal). More to the point, the SIGINT signal is ignored. Conversely, I've determined that SIGINT is handled when not in an event loop. Why is it that SIGINT is ignored when executing an asyncio event loop? The below program should demonstrate the problem - run it in the terminal and try to stop it by pressing Ctrl+C, it should keep running: import asyncio import signal # Never gets called after entering event loop def handler(*args): print(

I am trying to learn how to (idiomatically) use Python 3.4's asyncio . My biggest stumbling block is how to "chain" coroutines that continually consume data, update state with it, and allow that state to be used by another coroutine. The observable behaviour I expect from this example program is simply to periodically report on the sum of numbers received from a subprocess. The reporting should happen at roughly the same rate the Source object recieves numbers from the subprocess. IO blocking in the reporting function should not block reading from the subprocess. If the reporting function

Use case A simple function which checks if a specific string is in another string at a position which is a multiple of 3 (see here for a real world example , finding stop codons in a DNA sequence). Functions sliding_window : takes a string of length 3 compares it to the search string, if they are identical moves 3 characters forward. incremental_start : tries to find the search string, if the found position is not a multiple of 3, it tries to find the next position after the found position. Please note: The sample data is just to make sure that each function has to go through the complete

Using python3.4. Here I want use singledispatch to dispatch different type in __mul__ method . The code like this : class Vector(object): ## some code not paste @functools.singledispatch def __mul__(self, other): raise NotImplementedError("can't mul these type") @__mul__.register(int) @__mul__.register(object) # Becasue can't use Vector , I have to use object def _(self, other): result = Vector(len(self)) # start with vector of zeros for j in range(len(self)): result[j] = self[j]*other return result @__mul__.register(Vector) # how can I use the self't type @__mul__.register(object) # def _