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n-grams in python, four, five, six grams?
... up your own function to do this using itertools:
from itertools import izip, islice, tee
s = 'spam and eggs'
N = 3
trigrams = izip(*(islice(seq, index, None) for index, seq in enumerate(tee(s, N))))
list(trigrams)
# [('s', 'p', 'a'), ('p', 'a', 'm'), ('a', 'm', ' '),
# ('m', ' ', 'a'), (' ', 'a',...
How to mkdir only if a directory does not already exist?
I am writing a shell script to run under the KornShell (ksh) on AIX. I would like to use the mkdir command to create a directory. But the directory may already exist, in which case I do not want to do anything. So I want to either test to see that the directory does not exist, or suppress the "Fil...
How can I create a directly-executable cross-platform GUI app using Python?
... Python 3, nor is it listed in the roadmap of future releases. I mean, is AIX and Solaris support really more useful than Python 3?
– Dave
Nov 10 '11 at 19:57
11
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重构理论及实践——用工厂模式重构c++后台代码 - C/C++ - 清泛网 - 专注C/C...
...架开发的，简单地说，这是压测后台的消息中转主模块，把不同的消息转发到不同的下游模块。实现层面上，该程序主逻辑就是个消息处理函数，思想非常简单，是典型的基于消息的后台逻辑。几个特点：单进程、无状态、数据...
Is there a link to GitHub for downloading a file in the latest release of a repository?
...o support https://github.com/USER/PROJECT/releases/latest/download/package.zip. That should redirected to the latest tagged package.zip release asset. Hope it's handy!
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Url decode UTF-8 in Python
...brary as well:
import requests
url = "http://www.mywebsite.org/Data%20Set.zip"
print(f"Before: {url}")
print(f"After: {requests.utils.unquote(url)}")
Output:
$ python3 test_url_unquote.py
Before: http://www.mywebsite.org/Data%20Set.zip
After: http://www.mywebsite.org/Data Set.zip
Might be han...
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...
浅谈Heatmap：网页热点图生成原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...png。实际应用时，有时候点击量会非常大，此时没有必要把所有的点击都渲染出来，而应该采取随机取样的策略，如果采用MongoDB持久化的话，可以参考：The Random Attribute。
备注：代码参考image-tempest。
最终展示
形象一点来说...
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...
How to get the command line args passed to a running process on unix/linux systems?
...mmand will work everywhere, the /proc stuff is OS specific. For example on AIX there is no cmdline in /proc.
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