Python
Python is a dynamically typed programming language designed by Guido van Rossum. Much like the programming language Ruby, Python was designed to be easily read by programmers. Because of its large following and many libraries, Python can be implemented and used to do anything from webpages to scientific research.
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Are there any references on how to create a good design diagram? What do the different colors mean? What do the dashed lines mean?
Sorry if this is a basic question but I don't even know where to start searching for more information. This is the first page I saw that had the diagrams in the format that I've seen before.
A curated list of awesome Python frameworks, libraries, software and resources
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Updated
Jan 9, 2020 - Python
There are some interesting algorithms in simulation from Physics, Chemistry, and Engineering especially regarding Monte Carlo simulation: Heat Bath algorithm, Metro-Police algorithm, Markov Chain Monte Carlo, etc.
Huge and nice collection and also getting very much appreciated from the community.
It would be great if somebody can translate into English then it will be reaching out to global.
It says in the documentation (the last section - "Working with Virtual Environments"):
For Python 3 add the following lines to the top of your .wsgi file:
activate_this = '/path/to/env/bin/activate_this.py' with open(activate_this) as file_: exec(file_.read(), dict(__file__=activate_this))
However `activate_this.p
In the given documentation, the mentioned key are acc and val_acc, but actually it is accuracy and val_accuracy.
Given documentation screenshot:

Whereas the actual keys are `dict_keys(['val_loss', 'val_accuracy
In = syntax,
- double quotes (
") - back slashes (
\) - non-ascii characters
$ http -v httpbin.org/post \
dquote='\"' \
multi-line='line 1\nline 2' Summary.
Expected Result
Docs page which has migration for 1-2 also has for 2-3 ;
https://github.com/kennethreitz/requests3/blob/master/docs/api.rst
Actual Result
Only 1-2 is still on docs/api.rst, even on repo requests3 (which has no issues only PR's)
Reproduction Steps
browse ^^
System Information
This is for dev docs
SUMMARY
When using such task items on output are duplicated.
- name: Prepare static directories
action: file path={{ item }} state=directory owner={{ owner }} group={{ owner }} mode=0750
with_items:
- "/opt/backups/{{ target_server }}/{{ site_name }}"
- "/opt/files/{{ site_name }}"
when: skip_create_files_dir is undefined or skip_create_files_dir != "1"
Description
Using dbscan with precomputed neighbors gives an error in 0.22.X, but not in 0.21.3.
I am not sure if this is an intended change or not, but could not see anything on this in the release history. If this is due to a mistake on my part on how to us precomputed neighbors, please tell me, and I will direct my question elsewhere.
Steps/Code to Reproduce
I think "outputs [-1]" and "outputs [0]" are equivalent (reversed) in this line of code, but the former (89%) works better than the latter (86%). Why?
Description
SitemapSpider throws a lxml.etree.XMLSyntaxError when hitting a blank sitemap page while crawling a sitemap.
Example sitemap with blank pages: https://bikeradar.com/sitemap.xml
Stack trace
Traceback (most recent call last):
File "/usr/local/lib/python3.8/site-packages/scrapy/utils/defer.py", line 102, in iter_errback
yield next(it)
File "/usr/loca
LogCumsumExp
🚀 Feature
Add numerically stable cumulative logsumexp function. Also we have associated PR on cummax that is needed for numerically stable implementation (pytorch/pytorch#20240).
Motivation
This is useful when computing sum of probabilities and have different applications.
Pitch
Torch has cumsum and cumprod so I suggest logcumsumexp to be added.
- face_recognition version: 1.2.3
- Python version: 3.7
- Operating System: Debian 10.1
Description
face_detection need to scan "known_people" directory every time.
in "known_people" directory I've 20 people and face_detection need a lot of time to "learn" before search known peoples inside new photos (unknown_pictures directory contain 2 photos).
it's possible to cache "learn" anali
Update the tutorial for "Building a container from scratch in Go - Liz Rice (Microscaling Systems)"
Description
The instructor in the above mentioned video has created a new version of the same tutorial, which can be found here
Why
It is always good to keep resources and tutorials up-to-date. The new video talks about namespaces, chroot and cgroups, and speaks about containers at a greater depth.
Is this something you're interest
100 Days of ML Coding
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Updated
Jan 9, 2020 - Python
One of our packagers asked if we could host our PGP somewhere accessible over HTTPS so they could automatically download it for extra verification on our PyPI packages. I think we can do this.
If this is done, we should document the existence of this file in https://github.com/certbot/certbot/blob/master/certbot/docs/packaging.rst.
给你一个 n 行 m 列的二维网格 grid 和一个整数 k。你需要将 grid 迁移 k 次。
每次「迁移」操作将会引发下述活动:
位于 grid[i][j] 的元素将会移动到 grid[i][j + 1]。
位于 grid[i][m - 1] 的元素将会移动到 grid[i + 1][0]。
位于 grid[n - 1][m - 1] 的元素将会移动到 grid[0][0]。
请你返回 k 次迁移操作后最终得到的 二维网格。
示例 1:
输入:grid = [[1,2,3],[4,5,6],[7,8,9]], k = 1
输出:[[9,1,2],[3,4,5],[
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该项目已达到最低可行的产品质量水平。虽然贡献者将它作为日常驱动程序,但它可能对某些命
令不稳定。未来版本将填补缺失的功能并提高稳定性。它的设计也随着成熟而变化。Nu附带了一组内置命令(如下所示)。如果命令未知,命令将弹出并执行它(在 Windows 上使
用 cmd 或在 Linux 和 MacOS 上使用 bash),正确地通过 stdin,stdout 和 stderr,所以像你的日常 git 工作流程甚至 vim 可以正常工作。还有一本关于 Nu 的书,目前正在进行中。
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I think listing anti-patterns with some basic reasoning about "why not" is a good idea.
Example - singleton. Although #256 has "won't fix" label
- it is in PRs section, and people (if searching history at all) are searching issues first.
- it was misspelled, Singelton instead of Singleton, therefore impossible to find
Listing most popular anti-patterns (without actual implementation) shou
The section about imports here: https://github.com/pandas-dev/pandas/wiki/Code-Style-and-Conventions#imports-aim-for-absolute
Can be moved to the code style guide in the documentation: https://dev.pandas.io/docs/development/code_style.html
This way we can remove the page from the wiki, that is mostly outdated.
AiLearning: 机器学习 - MachineLearning - ML、深度学习 - DeepLearning - DL、自然语言处理 NLP
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Updated
Jan 9, 2020 - Python
I was having a very hard time figuring out
fill = A.stack().mean()
A.add(B, fill_value=fill)fill = 4.5. However I computed a value of 3.2 because I was taking the mean from the column of A not the DataFrame A.
This coming after the Indexing chapter where "explicit is better than implicit." I was thinking that this should be a little more explicit.

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