The treebeard will guard your notebook

Episode #186: The treebeard will guard your notebook

Published Thu, Jun 18, 2020, recorded Wed, Jun 10, 2020.

Sponsored by us! Support our work through:

• Our courses at Talk Python Training
• Brian’s pytest book

Michael #1: sidetable - Create Simple Summary Tables in Pandas

• by Chris Moffitt
• Makes it easy to build a frequency table and simple summary of missing values in a DataFrame.
• Example without and with 
• A useful tool when starting data exploration on a new data set
• At its core, sidetable is a super-charged version of pandas value_counts with a little bit of crosstab mixed in.
• With sidetable is imported, you have a new accessor on all your DataFrames - stb that you can use to build summary tables.

Brian #2: tabulate

• suggested by Tom McDermott
• Pretty-print tabular data in Python, a library and a command-line utility.

    from tabulate import tabulate

    table = [["Sun",696000,1989100000],
             ["Earth",6371,5973.6],
             ["Moon",1737,73.5],
             ["Mars",3390,641.85]]
    headers=["Planet","R (km)", "mass (x 10^29 kg)"]
    table_str = tabulate(table, headers=headers)
    print(table_str)
    Planet      R (km)    mass (x 10^29 kg)
    --------  --------  -------------------
    Sun         696000           1.9891e+09
    Earth         6371        5973.6
    Moon          1737          73.5
    Mars          3390         641.85

• lots of table formats, including
• simple (Markdown extended)
• github (github flavored markdown)
• pipe
• jira
• mediawiki
• html
• plain (just spaces)
• different column alignment options
• number formatting

#python #courses at talk python training #treebeard

What is GEEK

Buddha Community

HAML Lint: Tool For Writing Clean and Consistent HAML

HAML-Lint

haml-lint is a tool to help keep your HAML files clean and readable. In addition to HAML-specific style and lint checks, it integrates with RuboCop to bring its powerful static analysis tools to your HAML documents.

You can run haml-lint manually from the command line, or integrate it into your SCM hooks.

Requirements

• Ruby 2.4+
• HAML 4.0+

Installation

gem install haml_lint

If you'd rather install haml-lint using bundler, don't require it in your Gemfile:

gem 'haml_lint', require: false

Then you can still use haml-lint from the command line, but its source code won't be auto-loaded inside your application.

Usage

Run haml-lint from the command line by passing in a directory (or multiple directories) to recursively scan:

haml-lint app/views/

You can also specify a list of files explicitly:

haml-lint app/**/*.html.haml

haml-lint will output any problems with your HAML, including the offending filename and line number.

File Encoding

haml-lint assumes all files are encoded in UTF-8.

Command Line Flags

Command Line Flag	Description
--auto-gen-config	Generate a configuration file acting as a TODO list
--auto-gen-exclude-limit	Number of failures to allow in the TODO list before the entire rule is excluded
-c/--config	Specify which configuration file to use
-e/--exclude	Exclude one or more files from being linted
-i/--include-linter	Specify which linters you specifically want to run
-x/--exclude-linter	Specify which linters you don't want to run
-r/--reporter	Specify which reporter you want to use to generate the output
-p/--parallel	Run linters in parallel using available CPUs
--fail-fast	Specify whether to fail after the first file with lint
--fail-level	Specify the minimum severity (warning or error) for which the lint should fail
--[no-]color	Whether to output in color
--[no-]summary	Whether to output a summary in the default reporter
--show-linters	Show all registered linters
--show-reporters	Display available reporters
-h/--help	Show command line flag documentation
-v/--version	Show haml-lint version
-V/--verbose-version	Show haml-lint, haml, and ruby version information

Configuration

haml-lint will automatically recognize and load any file with the name .haml-lint.yml as a configuration file. It loads the configuration based on the directory haml-lint is being run from, ascending until a configuration file is found. Any configuration loaded is automatically merged with the default configuration (see config/default.yml).

Here's an example configuration file:

linters:
  ImplicitDiv:
    enabled: false
    severity: error

  LineLength:
    max: 100

All linters have an enabled option which can be true or false, which controls whether the linter is run, along with linter-specific options. The defaults are defined in config/default.yml.

Linter Options

Option	Description
enabled	If false, this linter will never be run. This takes precedence over any other option.
include	List of files or glob patterns to scope this linter to. This narrows down any files specified via the command line.
exclude	List of files or glob patterns to exclude from this linter. This excludes any files specified via the command line or already filtered via the include option.
severity	The severity of the linter. External tools consuming haml-lint output can use this to determine whether to warn or error based on the lints reported.

Global File Exclusion

The exclude global configuration option allows you to specify a list of files or glob patterns to exclude from all linters. This is useful for ignoring third-party code that you don't maintain or care to lint. You can specify a single string or a list of strings for this option.

Skipping Frontmatter

Some static blog generators such as Jekyll include leading frontmatter to the template for their own tracking purposes. haml-lint allows you to ignore these headers by specifying the skip_frontmatter option in your .haml-lint.yml configuration:

skip_frontmatter: true

Inheriting from Other Configuration Files

The inherits_from global configuration option allows you to specify an inheritance chain for a configuration file. It accepts either a scalar value of a single file name or a vector of multiple files to inherit from. The inherited files are resolved in a first in, first out order and with "last one wins" precedence. For example:

inherits_from:
  - .shared_haml-lint.yml
  - .personal_haml-lint.yml

First, the default configuration is loaded. Then the .shared_haml-lint.yml configuration is loaded, followed by .personal_haml-lint.yml. Each of these overwrite each other in the event of a collision in configuration value. Once the inheritance chain is resolved, the base configuration is loaded and applies its rules to overwrite any in the intermediate configuration.

Lastly, in order to match your RuboCop configuration style, you can also use the inherit_from directive, which is an alias for inherits_from.

Linters

» Linters Documentation

haml-lint is an opinionated tool that helps you enforce a consistent style in your HAML files. As an opinionated tool, we've had to make calls about what we think are the "best" style conventions, even when there are often reasonable arguments for more than one possible style. While all of our choices have a rational basis, we think that the opinions themselves are less important than the fact that haml-lint provides us with an automated and low-cost means of enforcing consistency.

Custom Linters

Add the following to your configuration file:

require:
  - './relative/path/to/my_first_linter.rb'
  - 'absolute/path/to/my_second_linter.rb'

The files that are referenced by this config should have the following structure:

module HamlLint
  # MyFirstLinter is the name of the linter in this example, but it can be anything
  class Linter::MyFirstLinter < Linter
    include LinterRegistry

    def visit_tag
      return unless node.tag_name == 'div'
      record_lint(node, "You're not allowed divs!")
    end
  end
end

For more information on the different types on HAML node, please look through the HAML parser code: https://github.com/haml/haml/blob/master/lib/haml/parser.rb

Keep in mind that by default your linter will be disabled by default. So you will need to enable it in your configuration file to have it run.

Disabling Linters within Source Code

One or more individual linters can be disabled locally in a file by adding a directive comment. These comments look like the following:

-# haml-lint:disable AltText, LineLength
[...]
-# haml-lint:enable AltText, LineLength

You can disable all linters for a section with the following:

-# haml-lint:disable all

Directive Scope

A directive will disable the given linters for the scope of the block. This scope is inherited by child elements and sibling elements that come after the comment. For example:

-# haml-lint:disable AltText
#content
  %img#will-not-show-lint-1{ src: "will-not-show-lint-1.png" }
  -# haml-lint:enable AltText
  %img#will-show-lint-1{ src: "will-show-lint-1.png" }
  .sidebar
    %img#will-show-lint-2{ src: "will-show-lint-2.png" }
%img#will-not-show-lint-2{ src: "will-not-show-lint-2.png" }

The #will-not-show-lint-1 image on line 2 will not raise an AltText lint because of the directive on line 1. Since that directive is at the top level of the tree, it applies everywhere.

However, on line 4, the directive enables the AltText linter for the remainder of the #content element's content. This means that the #will-show-lint-1 image on line 5 will raise an AltText lint because it is a sibling of the enabling directive that appears later in the #content element. Likewise, the #will-show-lint-2 image on line 7 will raise an AltText lint because it is a child of a sibling of the enabling directive.

Lastly, the #will-not-show-lint-2 image on line 8 will not raise an AltText lint because the enabling directive on line 4 exists in a separate element and is not a sibling of the it.

Directive Precedence

If there are multiple directives for the same linter in an element, the last directive wins. For example:

-# haml-lint:enable AltText
%p Hello, world!
-# haml-lint:disable AltText
%img#will-not-show-lint{ src: "will-not-show-lint.png" }

There are two conflicting directives for the AltText linter. The first one enables it, but the second one disables it. Since the disable directive came later, the #will-not-show-lint element will not raise an AltText lint.

You can use this functionality to selectively enable directives within a file by first using the haml-lint:disable all directive to disable all linters in the file, then selectively using haml-lint:enable to enable linters one at a time.

Onboarding Onto a Preexisting Project

Adding a new linter into a project that wasn't previously using one can be a daunting task. To help ease the pain of starting to use Haml-Lint, you can generate a configuration file that will exclude all linters from reporting lint in files that currently have lint. This gives you something similar to a to-do list where the violations that you had when you started using Haml-Lint are listed for you to whittle away, but ensuring that any views you create going forward are properly linted.

To use this functionality, call Haml-Lint like:

haml-lint --auto-gen-config

This will generate a .haml-lint_todo.yml file that contains all existing lint as exclusions. You can then add inherits_from: .haml-lint_todo.yml to your .haml-lint.yml configuration file to ensure these exclusions are used whenever you call haml-lint.

By default, any rules with more than 15 violations will be disabled in the todo-file. You can increase this limit with the auto-gen-exclude-limit option:

haml-lint --auto-gen-config --auto-gen-exclude-limit 100

Editor Integration

Vim

If you use vim, you can have haml-lint automatically run against your HAML files after saving by using the Syntastic plugin. If you already have the plugin, just add let g:syntastic_haml_checkers = ['haml_lint'] to your .vimrc.

Vim 8 / Neovim

If you use vim 8+ or Neovim, you can have haml-lint automatically run against your HAML files as you type by using the Asynchronous Lint Engine (ALE) plugin. ALE will automatically lint your HAML files if it detects haml-lint in your PATH.

Sublime Text 3

If you use SublimeLinter 3 with Sublime Text 3 you can install the SublimeLinter-haml-lint plugin using Package Control.

Atom

If you use atom, you can install the linter-haml plugin.

TextMate 2

If you use TextMate 2, you can install the Haml-Lint.tmbundle bundle.

Visual Studio Code

If you use Visual Studio Code, you can install the Haml Lint extension

Git Integration

If you'd like to integrate haml-lint into your Git workflow, check out our Git hook manager, overcommit.

Rake Integration

To execute haml-lint via a Rake task, make sure you have rake included in your gem path (e.g. via Gemfile) add the following to your Rakefile:

require 'haml_lint/rake_task'

HamlLint::RakeTask.new

By default, when you execute rake haml_lint, the above configuration is equivalent to running haml-lint ., which will lint all .haml files in the current directory and its descendants.

You can customize your task by writing:

require 'haml_lint/rake_task'

HamlLint::RakeTask.new do |t|
  t.config = 'custom/config.yml'
  t.files = ['app/views', 'custom/*.haml']
  t.quiet = true # Don't display output from haml-lint to STDOUT
end

You can also use this custom configuration with a set of files specified via the command line:

# Single quotes prevent shell glob expansion
rake 'haml_lint[app/views, custom/*.haml]'

Files specified in this manner take precedence over the task's files attribute.

Documentation

Code documentation is generated with YARD and hosted by RubyDoc.info.

Contributing

We love getting feedback with or without pull requests. If you do add a new feature, please add tests so that we can avoid breaking it in the future.

Speaking of tests, we use Appraisal to test against both HAML 4 and 5. We use rspec to write our tests. To run the test suite, execute the following from the root directory of the repository:

appraisal bundle install
appraisal bundle exec rspec

Community

All major discussion surrounding HAML-Lint happens on the GitHub issues page.

Changelog

If you're interested in seeing the changes and bug fixes between each version of haml-lint, read the HAML-Lint Changelog.

Author: sds
Source Code: https://github.com/sds/haml-lint
License: MIT license

#haml #lint 

The treebeard will guard your notebook

Episode #186: The treebeard will guard your notebook

Published Thu, Jun 18, 2020, recorded Wed, Jun 10, 2020.

Sponsored by us! Support our work through:

• Our courses at Talk Python Training
• Brian’s pytest book

Michael #1: sidetable - Create Simple Summary Tables in Pandas

• by Chris Moffitt
• Makes it easy to build a frequency table and simple summary of missing values in a DataFrame.
• Example without and with 
• A useful tool when starting data exploration on a new data set
• At its core, sidetable is a super-charged version of pandas value_counts with a little bit of crosstab mixed in.
• With sidetable is imported, you have a new accessor on all your DataFrames - stb that you can use to build summary tables.

Brian #2: tabulate

• suggested by Tom McDermott
• Pretty-print tabular data in Python, a library and a command-line utility.

    from tabulate import tabulate

    table = [["Sun",696000,1989100000],
             ["Earth",6371,5973.6],
             ["Moon",1737,73.5],
             ["Mars",3390,641.85]]
    headers=["Planet","R (km)", "mass (x 10^29 kg)"]
    table_str = tabulate(table, headers=headers)
    print(table_str)
    Planet      R (km)    mass (x 10^29 kg)
    --------  --------  -------------------
    Sun         696000           1.9891e+09
    Earth         6371        5973.6
    Moon          1737          73.5
    Mars          3390         641.85

• lots of table formats, including
• simple (Markdown extended)
• github (github flavored markdown)
• pipe
• jira
• mediawiki
• html
• plain (just spaces)
• different column alignment options
• number formatting

#python #courses at talk python training #treebeard

Rodrigo Senra - Jupyter Notebooks

Nosso convidado de hoje é diretor técnico na Work & Co, PhD em Ciências da Computação, já contribuiu com inúmeros projetos open source em Python, ajudou a fundar a Associação Python Brasil e já foi premiado com o Prêmio Dorneles Tremea por contribuições para a comunidade Python Brasil.

#alexandre oliva #anaconda #apache zeppelin #associação python brasil #azure notebooks #beakerx #binder #c++ #closure #colaboratory #donald knuth #fernando pérez #fortran #graphql #guido van rossum #ipython #java #javascript #json #jupyter kenels #jupyter notebooks #jupyterhub #jupyterlab #latex #lisp #literate programming #lua #matlab #perl #cinerdia #prêmio dorneles tremea #python #r #rodrigo senra #scala #spark notebook #tcl #typescript #zope

Hire Best Security Guard Company | UGS Security

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Businesses tend to hire companies to secure their offices for employee safety. Security is the need of the hour for our era. Terrorism and brutal crime have increased over the years. There is a constant risk of criminal activity so most offices look for measures to control it. Companies that require security guards look for companies that provide reliable service. Service provision should be a priority for all presenting their offers. Locks and different types of guards are essential for wellbeing. Mostly, the best security guard company available offer top-notch security that cannot be broken into.

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Security guards are essentially needed to provide maximum protection onsite. UGS Security has a large security team so that the clients are satisfied. Mostly, armed guards provide resistance if there is any forceful action being taken place. If there is a general need to build a sense of reliability, unarmed guards do the job.

Focus on all aspects of protection is the quality of the best security guard company. The benefit of all such guards is that they offer security in all areas. Most offices have assets that they aim to protect. Unarmed security guards will make sure that no unauthorized person enters the building. Armed guards will commend the usage of force and weapons to counter each breach in security.
The best security guard company gives phenomenal services to customers. This is why UGS Security is termed to be the best amongst their competitions.

Advantages of hiring the best security guard company

Firstly, hiring the best security guard company is essential for each workspace. the top-notch quality guards ensure employee protection. There are a lot of benefits of hiring the best security guard company.
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The best security guard company will aim to develop a feeling of reliability and certainty to all employees. Employees will exhibit efficiency if they feel safe and secure in their environment.
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Click here for more information.

#best security guard company #security guard company #security guard company near me

Notebook: Jupyter interactive Notebook

Jupyter Notebook

The Jupyter notebook is a web-based notebook environment for interactive computing.

Maintained versions

We maintain the two most recently released major versions of Jupyter Notebook, Notebook v5 and Classic Notebook v6. After Notebook v7.0 is released, we will no longer maintain Notebook v5. All Notebook v5 users are strongly advised to upgrade to Classic Notebook v6 as soon as possible.

The Jupyter Notebook project is currently undertaking a transition to a more modern code base built from the ground-up using JupyterLab components and extensions.

There is new stream of work which was submitted and then accepted as a Jupyter Enhancement Proposal (JEP) as part of the next version (v7): https://jupyter.org/enhancement-proposals/79-notebook-v7/notebook-v7.html

There is also a plan to continue maintaining Notebook v6 with bug and security fixes only, to ease the transition to Notebook v7: https://github.com/jupyter/notebook-team-compass/issues/5#issuecomment-1085254000

Notebook v7

The next major version of Notebook will be based on:

• JupyterLab components for the frontend
• Jupyter Server for the Python server

This represents a significant change to the jupyter/notebook code base.

To learn more about Notebook v7: https://jupyter.org/enhancement-proposals/79-notebook-v7/notebook-v7.html

Classic Notebook v6

Maintainance and security-related issues are now being addressed in the 6.4.x branch.

A 6.5.x branch will be soon created and will depend on nbclassic for the HTML/JavaScript/CSS assets.

New features and continuous improvement is now focused on Notebook v7 (see section above).

If you have an open pull request with a new feature or if you were planning to open one, we encourage switching over to the Jupyter Server and JupyterLab architecture, and distribute it as a server extension and / or JupyterLab prebuilt extension. That way your new feature will also be compatible with the new Notebook v7.

Jupyter notebook, the language-agnostic evolution of IPython notebook

Jupyter notebook is a language-agnostic HTML notebook application for Project Jupyter. In 2015, Jupyter notebook was released as a part of The Big Split™ of the IPython codebase. IPython 3 was the last major monolithic release containing both language-agnostic code, such as the IPython notebook, and language specific code, such as the IPython kernel for Python. As computing spans across many languages, Project Jupyter will continue to develop the language-agnostic Jupyter notebook in this repo and with the help of the community develop language specific kernels which are found in their own discrete repos.

• The Big Split™ announcement
• Jupyter Ascending blog post

Installation

You can find the installation documentation for the Jupyter platform, on ReadTheDocs. The documentation for advanced usage of Jupyter notebook can be found here.

For a local installation, make sure you have pip installed and run:

pip install notebook

Usage - Running Jupyter notebook

Running in a local installation

Launch with:

jupyter notebook

Running in a remote installation

You need some configuration before starting Jupyter notebook remotely. See Running a notebook server.

Development Installation

See CONTRIBUTING.md for how to set up a local development installation.

Contributing

If you are interested in contributing to the project, see CONTRIBUTING.md.

Community Guidelines and Code of Conduct

This repository is a Jupyter project and follows the Jupyter Community Guides and Code of Conduct.

Resources

• Project Jupyter website
• Online Demo at jupyter.org/try
• Documentation for Jupyter notebook
• Korean Version of Installation
• Documentation for Project Jupyter [PDF]
• Issues
• Technical support - Jupyter Google Group

Download Details:

Author: Jupyter
Source Code: https://github.com/jupyter/notebook 
License: View license

#jupyter #notebook