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How to get all subsets of a set? (powerset)
...ge(x)]
for i in range(1 << x):
yield [ss for mask, ss in zip(masks, s) if i & mask]
And then the test code would look like this, say:
print(list(powerset([4, 5, 6])))
Using yield means that you do not need to calculate all results in a single piece of memory. Precalculatin...
Post-install script with Python setuptools
...
Note: The solution below only works when installing a source distribution zip or tarball, or installing in editable mode from a source tree. It will not work when installing from a binary wheel (.whl)
This solution is more transparent:
You will make a few additions to setup.py and there is no n...
Best practices for storing postal addresses in a database (RDBMS)?
...locality => Dependent locality (unused)
postal_code => Postal code / ZIP Code
thoroughfare => Street address
premise => Apartment, Suite, Box number, etc.
sub_premise => Sub premise (unused)
A lessons I've learned:
Don't store anything numerically.
Store country and administrative...
Deep Learning（深度学习）学习笔记整理系列之（三） - 大数据 & AI - 清泛...
...比如顶层的一个结点表示人脸，那么所有人脸的图像应该激活这个结点，并且这个结果向下生成的图像应该能够表现为一个大概的人脸图像。Wake-Sleep算法分为醒（wake）和睡（sleep）两个部分。
1）wake阶段：认知过程，通过外界...
Download data url file
I'm playing with the idea of making a completely JavaScript-based zip/unzip utility that anyone can access from a browser. They can just drag their zip directly into the browser and it'll let them download all the files within. They can also create new zip files by dragging individual files in.
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Facebook Android Generate Key Hash
...nload Openssl from: here.
2) Make a openssl folder in C drive
3) Extract Zip files into this openssl folder created in C Drive.
4) Copy the File debug.keystore from .android folder in my case (C:\Users\SYSTEM.android) and paste into JDK bin Folder in my case (C:\Program Files\Java\jdk1.6.0_05\bi...
Run Command Prompt Commands
...bout.
This is the method I use to combine files (in this case a jpg and a zip). Note that I create a buffer that gets filled with the content of the zip file (in small chunks rather than in one big read operation), and then the buffer gets written to the back of the jpg file until the end of the z...
How do I detect whether a Python variable is a function?
...n of "function" that is usually not what you need. For example, it rejects zip (technically a class):
>>> type(zip), isinstance(zip, types.FunctionType)
(<class 'type'>, False)
open (built-in functions have a different type):
>>> type(open), isinstance(open, types.Functio...
SQL Client for Mac OS X that works with MS SQL Server [closed]
... I just wasted time trying the current JAR file version (jtds-1.3.0-dist.zip) and it does not work with Oracle SQL Developer. Finally I tried v1.2 (jtds-1.2.7-dist.zip) and that works.
– IcarusNM
Feb 15 '13 at 18:09
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How to make exe files from a node.js app?
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What if you zip/rar node_modules, and extract to a temp directory when the application runs? Could get a bit slow, if you've got a lot of modules, though.
– Jarrod Mosen
Nov 30 '14 at 21:57
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