python-3.6

I tried to read https://hackernoon.com/asynchronous-python-45df84b82434 . It's about asynchronous python and I tried the code from this, but I'm getting a weird Error. The code is: ` import asyncio import aiohttp urls = ['http://www.google.com', 'http://www.yandex.ru', 'http://www.python.org'] async def call_url(url): print('Starting {}'.format(url)) response = await aiohttp.ClientSession().get(url) data = await response.text() print('{}: {} bytes: {}'.format(url, len(data), data)) return data futures = [call_url(url) for url in urls] asyncio.run(asyncio.wait(futures)) When I try to run it

I have just installed Python 3.6 on Fedora 25 (64 bits) by running dnf install python36 and I can't use any modules Python 3.5 can otherwise use just fine, for example, PyCharm complains about setup tools not being installed, also I can run python3 and issue: import aiohttp However, if run python36 and then: import aiohttp I instead get: Traceback (most recent call last): File "", line 1, in ModuleNotFoundError: No module named 'aiohttp' Pip is also not present on python36, as python36 -m pip throws: /usr/bin/python36: No module named pip I have to note that I've got python 3.4, 3.5 and 3.6

I sometimes used map if there was a function/method that was written in C to get a bit extra performance. However I recently revisited some of my benchmarks and noticed that the relative performance (compared to a similar list comprehension) drastically changed between Python 3.5 and 3.6. That's not the actual code but just a minimal sample that illustrates the difference: import random lst = [random.randint(0, 10) for _ in range(100000)] assert list(map((5).__lt__, lst)) == [5 < i for i in lst] %timeit list(map((5).__lt__, lst)) %timeit [5 < i for i in lst] I realize that it's not a good idea

I am interrested in knowing the recommended way to install pip3 for python3.6 (as of today, may 2018) on current version of centos7 (7.5.1804) and the accepted answer of How to install pip in CentOS 7? seems to be outdated because: yum search -v pip outputs (among other things): python2-pip.noarch : A tool for installing and managing Python 2 packages Repo : epel python34-pip.noarch : A tool for installing and managing Python3 packages Repo : epel and python34-pip seems to be a (newer?) simpler way than the accepted answer of How to install pip in CentOS 7? : sudo yum install python34

I would like to know how to format this case in a Pythonic way with f-strings: names = ['Adam', 'Bob', 'Cyril'] text = f"Winners are:\n{'\n'.join(names)}" print(text) The problem is that '\' cannot be used inside the {...} expression portions of an f-string. Expected output: Winners are: Adam Bob Cyril You can't. Backslashes cannot appear inside the curly braces {} ; doing so results in a SyntaxError : >>> f'{\}' SyntaxError: f-string expression part cannot include a backslash This is specified in the PEP for f-strings: Backslashes may not appear inside the expression portions of f-strings, [.