Which is jinja2 filter does netaddr use?

1.9 新版功能. ipaddr () is a Jinja2 filter designed to provide an interface to netaddr Python package from within Ansible.
Thereof, how to use filters in Jinja2?
Let's jump straight in. Jinja2 filter is something we use to transform data held in variables. We apply filters by placing pipe symbol | after the variable followed by name of the filter. Filters can change the look and format of the source data, or even generate new data derived from the input values.
Additionally, can I use Jinja2 with Ansible? In general, use the filters and tests provided by Ansible 2.8 wherever possible: https://docs.ansible.com/ansible/2.8/user_guide/playbooks_templating.html If you must use a Jinja2 feature (like map or selectattr ), and you want to make sure it works with Jinja 2.7, it is a bit tricky, because there are no docs.
Moreover, where does the data come from in a Jinja2 template?
Jinja2 doesn't care where the data comes from, this could come from JSON returned by some API, be loaded from static YAML file, or simply be a Python Dict defined in our app. All that matters is that we have Jinja template and some data to render it with. We now know what Jinja is and why would one use it.
Subsequently, what is Jinja2 used for in Python?
What is Jinja2? Jinja2 is a feature rich templating language widely used in the Python ecosystem. It can be used directly in your Python programs and a lot of larger applications use it as their template rendering engine. Templating languages allow creation of text based documents where some of the content can be dynamically generated.

20 Similar Question Found

Which is the best filter to use in jinja2?

If you rely on the order in which they've been recorded you should either use collections.OrderedDict if using Jinja2 in Python script, or you can apply dictsort filter in your template to order your dictionary by key or value. This concludes basics of looping in Jinja2 templates.

How does python docx-template work with jinja2?

By using these tags, python-docx-template will take care to put the real jinja2 tags at the right place into the document’s xml source code. In addition, these tags also tell python-docx-template to remove the paragraph, table row, table column or run where the begin and ending tags are located and only takes care about what is in between.

How to use pyecharts flask with jinja2?

请将下面的代码保存为 server.py 文件并移至项目的根目录下。 from flask import Flask from jinja2 import Markup, Environment, FileSystemLoader from pyecharts. globals import CurrentConfig # 关于 CurrentConfig，可参考 [基本使用-全局变量] CurrentConfig.

Are there any builtin filters in jinja2?

Jinja2 ships with many of these. See builtin filters in the official Jinja2 template documentation. In addition to those, Ansible supplies many more. The following filters will take a data structure in a template and render it in a slightly different format. These are occasionally useful for debugging:

Which is part 4 of the jinja2 tutorial?

This is part 4 of Jinja2 tutorial where we continue looking at the language features, specifically we'll be discussing template filters. We'll see what filters are and how we can use them in our templates. I'll also show you how you can write your own custom filters. Why use filters? When not to use filters?

What kind of templating language is jinja2?

Jinja2 is a modern and designer-friendly templating language for Python, modelled after Django’s templates. It is fast, widely used and secure with the optional sandboxed template execution environment: easy to debug. Line numbers of exceptions directly point to the correct line in the template. Why is it called Jinja?

What to expect in part 2 of jinja2?

Welcome to part 2 of my Jinja2 Tutorial. In part 1 we learned what Jinja2 is, what are its uses, and we started looking at templating basics. Coming up next are loops and conditionals, sprinkled with tests and a healthy dose of examples! In Jinja2 loops and conditionals come under name of control structures, since they affect flow of a program.

How to create a for loop in jinja2?

Jinja2 being a templating language has no need for wide choice of loop types so we only get for loop. For loops start with {% for my_item in my_collection %} and end with {% endfor %}. This is very similar to how you'd loop over an iterable in Python. Here my_item is a loop variable that will be taking values as we go over the elements.

What kind of conditional statement does jinja2 use?

Jinja2 implements one type of conditional statement, the if statement. For branching out we can use elif and else. Conditionals in Jinja2 can be used in a few different ways. We'll now have a look at some use cases and how they combine with other language features. Comparisons

What do you need to know about jinja2?

Jinja2 is an implementation of the template engines concept. Learn more in the web development chapter or view the table of contents for all topics. Jinja2 strikes a thoughtful balance on the template engine spectrum where on one end you can embed arbitrary code in the templates and the other end a developer can code whatever she wants.

What can jinja2 be used for in python?

Jinja2 is a commonly-used templating engine for web frameworks such as Flask , Bottle, Morepath and, as of its 1.8 update, optionally Django as well. Jinja2 is also used as a template language by configuration management tool Ansible and the static site generator Pelican, among many other similar tools.

Is there a template engine similar to jinja2?

In fact, Jinja2's syntax is inspired by Django's built-in template engine, which was released several years earlier. There were many template systems, such as JavaServer Pages (JSPs) , that originated almost a decade before Jinja2. Jinja2 built upon the concepts of other template engines and today is widely used by the Python community.

When was the first version of jinja2 released?

The first recorded public released of Jinja2 was in 2008 with 2.0rc1 . Since then the engine has seen numerous updates and remains in active development. Jinja2 engine certainly wasn't the first template engine. In fact, Jinja2's syntax is inspired by Django's built-in template engine, which was released several years earlier.

What is the process of rendering in jinja2?

Rendering is a process of filling these placeholders with actual data. As HTML file is rendered, data is sent to a client. Write this file in app/routes.py: So, now we render HTML by using render_template () . The syntax is: This renders a template from the templates folder with the given content.

Is there a template engine for flask called jinja2?

This post is part of a series called Templating With Jinja2 in Flask . Jinja2 is a template engine written in pure Python. It provides a Django -inspired non-XML syntax but supports inline expressions and an optional sandboxed environment. It is small but fast, apart from being an easy-to-use standalone template engine.

Are there filters for rounding in jinja2 brackets?

You can find a list of filters in the jinja2 documentation. For example, to round, you can do : This will display "42" on the web page. A abs filter exist in the same way. Please note that these filters can only be used to alter values before display, and can be used for calculations.

How is rounding in jinja2 different from python?

The jinja2 templating language is different from the python language. In jinja2, operation on values are often done during filters : { { something | operation }}. You can find a list of filters in the jinja2 documentation. For example, to round, you can do :

What does ansible template look like in jinja2?

An Ansible template is a text file built with the Jinja2 templating language with a j2 file extension. A Jinja2 template looks exactly like the text file you’d like to get onto a remote host. The only difference is that instead of static values, the file contains variables.

How are loops and conditionals handled in jinja2?

In Jinja2 loops and conditionals come under name of control structures, since they affect flow of a program. Control structures use blocks enclosed by {% and %} characters.

What kind of helper does jinja2 have?

Jinja2 ships with a wide range of useful little helpers that help solving common tasks in templates such as breaking up sequences of items into multiple columns and more.