python-3.5

Does asyncio supports asynchronous I/O for file operations? If yes, how I can use this in Python 3.5 with async/await syntax code? Andrew Svetlov Most operating systems don't support asynchronous file operations. That's why asyncio doesn't support them either. See the asyncio wiki for further explanation. That depends what library you use. curio offers this functionality, https://curio.readthedocs.io/en/latest/reference.html#module-curio.file plain asyncio doesn't, but there are 3rd party libraries, e.g. https://github.com/Tinche/aiofiles (which is really synchronous file access isolated in

This might be silly but I am unable to install cPickle with python 3.5 docker image Dockerfile FROM python:3.5-onbuild requirements.txt cpickle When I try to build the image $ docker build -t sample . Sending build context to Docker daemon 3.072 kB Step 1 : FROM python:3.5-onbuild # Executing 3 build triggers... Step 1 : COPY requirements.txt /usr/src/app/ Step 1 : RUN pip install --no-cache-dir -r requirements.txt ---> Running in 016c35a032ee Collecting cpickle (from -r requirements.txt (line 1)) Could not find a version that satisfies the requirement cpickle (from -r requirements.txt (line 1

I am trying to compile my python 3.5 file with the latest py2exe version 0.9.2.2 with the following command: py -3.5 -m py2exe.build_exe myscript.py But it reports this: "run-py3.5-win-amd64.exe" file is not found in the ...lib\site-packages\py2exe\ folder. Does this mean that py2exe 0.9.2.2 is only compatible up to python 3.4? Unfortunately as of November 2016 there is still no Python 3.5 support in sight for py2exe. However, I've had great success using cx_Freeze 5.0 with Python 3.5 and since both projects use a very similar configuration I've migrated away from py2exe to cx_Freeze without

I tried to install a package through pip3, and I got this error. Every pip/pip3 command that I run gives me this error- alexg@hitbox:~$ pip3 -V Traceback (most recent call last): File "/usr/local/bin/pip3", line 7, in <module> from pip import main File "/home/alexg/.local/lib/python3.5/site-packages/pip/__init__.py", line 26, in <module> from pip.utils import get_installed_distributions, get_prog File "/home/alexg/.local/lib/python3.5/site-packages/pip/utils/__init__.py", line 27, in <module> from pip._vendor import pkg_resources File "/home/alexg/.local/lib/python3.5/site-packages/pip/_vendor

I am trying to teach myself Python's async functionality. To do so I have built an async web scraper. I would like to limit the total number of connections I have open at once to be a good citizen on servers. I know that semaphore's are a good solution, and the asyncio library has a semaphore class built in. My issue is that Python complains when using yield from in an async function as you are combining yield and await syntax. Below is the exact syntax I am using... import asyncio import aiohttp sema = asyncio.BoundedSemaphore(5) async def get_page_text(url): with (yield from sema): try: resp

In Python 3.5, using sockets, I have: message = 'HTTP/1.1 200 OK\nContent-Type: text/html\n\n' s.send(message.encode()) How can I do that in one line? I ask because I had: s.send('HTTP/1.1 200 OK\nContent-Type: text/html\n\n') but in Python 3.5 bytes are required, not a string, so this gives the error: builtins.TypeError: a bytes-like object is required, not 'str' Should I not be using send? str , the type of text , is not the same as bytes , the type of sequences of eight-bit words . To concisely convert from one to the other, you could inline the call to encode (just as you could with any