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How to correct TypeError: Unicode-objects must be encoded before hashing?
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To store the password (PY3):
import hashlib, os
password_salt = os.urandom(32).hex()
password = '12345'
hash = hashlib.sha512()
hash.update(('%s%s' % (password_salt, password)).encode('utf-8'))
password_hash = hash.hexdigest()
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Android emulator freezing OS X v10.9 (Mavericks) with HAXM
I just updated to OS X v10.9 (Mavericks), and now whenever I start up any of my emulators, as soon as the emulator starts up, my entire computer freezes with a spinning progress indicator in the center of the screen (not a beachball, the progress indicator is similar to what you see when shutting...
What is an OS kernel ? How does it differ from an operating system? [closed]
...System while for a programmer the Linux kernel itself is a perfectly valid OS depending on what you're trying to achieve. For instance embedded systems are mostly just kernel with very small number of specialized processes running on top of them. In that case the kernel itself becomes the OS itself....
deciding among subprocess, multiprocessing, and thread in Python?
...(GIL) can be released in C code called from Python code).
I believe that most of the functions of the three modules you cite can be used in a platform-independent way. On the portability side, note that multiprocessing only comes in standard since Python 2.6 (a version for some older versions of P...
How to reset Android Studio
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I only know how to do this on Windows (but it should be similar on any OS, you will just need to find the correct location yourself - google search would help with that).
On Windows:
Go to your User Folder - on Windows 7/8 this would be:
[SYSDRIVE]:\Users\[your username] (ex. C:\Users\Joh...
36氪CEO刘成城揭秘氪空间筛选标准 - 资讯 - 清泛网 - 专注C/C++及内核技术
...好的项目。”
“氪空间就像是一所大学。”刘成城做了一个形象的比喻：“一所优秀的大学通常具备两个特点，第一是把同样优秀的人聚集在一起，另外就是提供好的环境，让学员向导师、同伴学习，共同成长。”
在三个月...
TokuMX vs. MongoDB 性能对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...了2天2夜多，近58个小时
使用mongostat统计，每分钟取值一个，纵坐标为inserts/s,横坐标为分钟。
局部放大图：
磁盘空间占用比较：
TokuMX 18G,MongoDB 80G
内存使用比较：
TokuMX,cacheSize设置为30G，开directio，内存使用完...
为什么要建立结构化的产品开发流程管理 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...开发流程往往结构化程度明显不足： 1.开发产品没有一个统一方法; 2.产品开发流程是局限于研发工作的部门流程，而不是面向市...企业产品开发流程往往结构化程度明显不足：
1. 开发产品没有一个“统一方法”;
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How to get the home directory in Python?
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You want to use os.path.expanduser.
This will ensure it works on all platforms:
from os.path import expanduser
home = expanduser("~")
If you're on Python 3.5+ you can use pathlib.Path.home():
from pathlib import Path
home = str(Path.home...
What's an easy way to read random line from a file in Unix command line?
... package that does exactly what you want, though not available in all distros. On its home page it actually recommends the use of shuf instead (which didn't exist when it was created, I believe). shuf is part of the GNU coreutils, rl is not.
rl -c 1 $FILE
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