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What is the most efficient string concatenation method in python?
...rm 0.515371084213 (65.63% as fast)
intp 0.378169059753 (89.43% as fast)
# python3.3 concatenate_test.py
plus 0.409130576998 (89.20% as fast)
join 0.364938726001 (100.00% as fast)
form 0.621366866995 (58.73% as fast)
intp 0.419064424001 (87.08% as fast)
# python3.4 concatenate_test.py
plus 0.481188...
Django Server Error: port is already in use
... post but It may help people
Just type this on your terminal
killall -9 python3
It will kill all python3 running on your machine and it will free your all port. Greatly help me when to work in Django project.
share
...
支撑Github的开源技术 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...管理工具，可以通过bower install 的形式将常用的前端资源下载到本地的项目目录中，例如：bower install bootstrap将会自动下载bootstrap的项目资源到本地的项目目录中，不需要自己手动来下载、移动资源文件，并且通过配置文件可以...
对外网用户的squid代理+认证 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ngproxynew# cd /usr/ports/www/apache13
jiulongproxynew# make install
3、下载并安装squid
从http://www.squid-cache.org/Versions/v2/2.6/下载squid-2.6.STABLE16.tar.gz
并通过FTP放置服务器目录中/home/funpower，然后开始解压安装：
jiulongproxynew# cd /home/funpower
jiul...
提升速度：XP注册表与驱动优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...户是非常有好处的——释放了保留的带宽可加快上网浏览下载的速度!
6、Windows XP不检查预定任务
通常情况下，当Windows XP连接到其它计算机时，会检查对方机子上所有预定的任务，这个过程会让你等上30秒钟，实在太讨厌了。...
C++ 读写xml方法整理（持续更新） - C/C++ - 清泛网 - 专注C/C++及内核技术
...太多了，这里对常用的几种做一个总结，附demo。1、Markup 下载：
特点：C++编写的，一个.h，一个.cpp，绿色小巧，直接加入工程源码编译，只支持MFC。
<?xml version="1.0" encoding="utf-8"?>
<root>
<update ver="1.2.0" pkg="setup.exe" force="1"/>
...
How to avoid explicit 'self' in Python?
...pears to be no way to dynamically update or change locals in a function in Python3, so calc3 and similar variants are no longer possible. The only python3 compatible solution I can think of now is to use globals:
def calc4(self, x) :
# Automatically copy every class variable in globals
...
Linux command or script counting duplicated lines in a text file?
...r(map(str.strip, fileinput.input())), indent=2))
Output:
$ cat filename | python3 script.py
{
"red apple": 1,
"green apple": 2,
"orange": 3
}
or you can use a simple one-liner:
$ cat filename | python3 -c 'print(__import__("json").dumps(__import__("collections").Counter(map(str.strip, __impo...
What is __main__.py?
...
@brk: That doesn't seem to be the case now. I just tried python3 program_dir and it ran __init__.py.
– mk12
Jan 3 '19 at 2:09
1
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How to merge lists into a list of tuples?
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note, at least in python3.6 zip does not return a list. So you need list(zip(list_a,list_b)) instead
– Supamee
Oct 2 '18 at 15:45
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