Jinja2 date format

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Jinja2 date format

Posted by: admin November 1, Leave a comment. There are two ways to do it. The direct approach would be to simply call and print the strftime method in your template, for example.

This filter is based on babel for reasons regarding i18n, but you can use strftime too.

解决Python: How do I format a date in Jinja2?

The advantage of the filter is, that you can write. You can use babel. I think you have to write your own filter for that. Tags: datelaravelpython. February 20, Python Leave a comment. Questions: I have the following 2D distribution of points. My goal is to perform a 2D histogram on it. That is, I want to set up a 2D grid of squares on the distribution and count the number of points Questions: I just noticed in PEP the one that rationalised radix calculations on literals and int arguments so that, for example, is no longer a valid literal and must instead be 0o10 if o Questions: During a presentation yesterday I had a colleague run one of my scripts on a fresh installation of Python 3.

It was able to create and write to a csv file in his folder proof that the Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Add menu. Python: How do I format a date in Jinja2? Leave a Reply Cancel reply Your email address will not be published.Released: Jun 8, View statistics for this project via Libraries.

Tags jinja2, extension, time. It will automatically install jinja2 along with arrow. The extension comes with a now tag that provides convenient access to the arrow.

Further documentation on the underlying functionality can be found in the arrow replace docs. If you encounter any problems, please file an issue along with a detailed description.

Distributed under the terms of the MIT license, jinja2-time is free and open source software. Jun 8, Dec 11, Download the file for your platform. If you're not sure which to choose, learn more about installing packages. Warning Some features may not work without JavaScript. Please try enabling it if you encounter problems. Search PyPI Search. Latest version Released: Jun 8, Jinja2 Extension for Dates and Times. Navigation Project description Release history Download files.

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Maintainers hackebrot.Filters in Jinja2 are a way of transforming template expressions from one kind of data into another. Jinja2 ships with many of these. See builtin filters in the official Jinja2 template documentation.

The following filters will take a data structure in a template and render it in a slightly different format.

Templating With Jinja2 in Flask: Date and Time Formatting With moment.js

These are occasionally useful for debugging:. The default behavior from ansible and ansible. The variable value will be used as is, but the template evaluation will raise an error if it is undefined. As of Ansible 1. In this example, the default None python null value will cause the later filters to fail, which will trigger the or omit portion of the logic.

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This filter also accepts a 3rd parameter, strict which defines if strict version parsing should be used. The default is Falseand if set as True will use more strict version parsing:.

This filter can be used similar to the default jinja2 random filter returning a random item from a sequence of itemsbut can also generate a random number based on a range. IP address filter can also be used to extract specific information from an IP address. The combine filter allows hashes to be merged.

For example, the following would override keys in one hash:. In this case, keys in d would override those in cwhich would override those in band so on. The comment filter allows to decorate the text with a chosen comment style. For example the following:. The filter can also be applied to any Ansible variable. Prior to ansible 2.

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A few useful filters are typically added with each new Ansible release. The development documentation shows how to extend Ansible filters by writing your own as plugins, though in general, we encourage new ones to be added to core so everyone can make use of them.

Ansible Documentation stable Plain style default. Custom style. This file is managed by Ansible.Forums New posts. What's new New posts. Sub Shop. Log in Register. New posts. Thread starter TutorialsFeed Start date Jul 6, JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.

TutorialsFeed New Member. In the first and second parts of this three-part tutorial series, we saw how to lay out the template structure in a Flask-based application using Jinja2 in a modular manner and how to create custom context processors, filters and macros in Jinja2.

In this part, we will cover how to implement advanced date and time formatting at template level in Jinja2 using moment. Getting Started Date and time formatting is a painful thing to handle in web applications.

Handling them at the level of Python, using the datetime library, increases the overhead and is pretty complex when it comes to handling time zones correctly. We should standardize the timestamps to UTC when stored in the database, but then the timestamps need to be processed every time they need to be presented to the users worldwide. It is a smart thing to defer this processing to the client side, that is, the browser.

The browser always knows the current time zone of the user and will be able to do the date and time manipulation correctly. Also, this takes off the necessary overhead from our application servers.

Just like any JS library, Moment. We will just have to place the JS file, moment. Refer to this runnable for more background. Add a file named momentjs. This will add the momentjs class to jinja environment variables. Set jinja template global app. We started with very basics of Jinja2 and learnt the best practices on how to lay out the template structure and leverage inheritance patterns.

Then we created some custom context processors, filters and macros which come very handy in advanced templating. The final tutorial covered how moment. You must log in or register to reply here. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.

By continuing to use this site, you are consenting to our use of cookies. Accept Learn more….It will be most useful as reference to those implementing the template interface to the application and not those who are creating Jinja templates. Jinja uses a central object called the template Environment. Instances of this class are used to store the configuration and global objects, and are used to load templates from the file system or other locations.

Even if you are creating templates from strings by using the constructor of Template class, an environment is created automatically for you, albeit a shared one.

Most applications will create one Environment object on application initialization and use that to load templates. The simplest way to configure Jinja to load templates for your application looks roughly like this:. This will create a template environment with the default settings and a loader that looks up the templates in the templates folder inside the yourapplication python package.

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Different loaders are available and you can also write your own if you want to load templates from a database or other resources. To render it with some variables, just call the render method:. Using a template loader rather than passing strings to Template or Environment.

Besides being a lot easier to use it also enables template inheritance.

jinja2 date format

In future versions of Jinja we might enable autoescaping by default for security reasons. As such you are encouraged to explicitly configure autoescaping now instead of relying on the default.

Jinja is using Unicode internally which means that you have to pass Unicode objects to the render function or bytestrings that only consist of ASCII characters. Python 2. One is the str type and the other is the unicode type, both of which extend a type called basestring.

Unfortunately the default is str which should not be used to store text based information unless only ASCII characters are used. With Python 2. That way Python will store the string as Unicode by decoding the string with the character encoding from the current Python module.

To set a better module encoding add the following comment to the first or second line of the Python module using the Unicode literal:. For Jinja the default encoding of templates is assumed to be utf It is not possible to use Jinja to process non-Unicode data. The reason for this is that Jinja uses Unicode already on the language level.

For example Jinja treats the non-breaking space as valid whitespace inside expressions which requires knowledge of the encoding or operating on an Unicode string. For more details about Unicode in Python have a look at the excellent Unicode documentation.

Another important thing is how Jinja is handling string literals in templates. A naive implementation would be using Unicode strings for all string literals but it turned out in the past that this is problematic as some libraries are typechecking against str explicitly.Getting the system timestamp is very useful in multiple types of scenarios while scripting. You can use it for just printing out the time for logging purpose, use it for naming a directory or use it in a conditional statement to control the flow of your program.

Ansible provides access to the remote system time using Ansible facts, which you can also store into other variables and use it as you need.

The simplest way to get the time of the remote system is using the Ansible timestamp facts. You can use the debug module for printing the output. The following example gets the date on the remote system. Make sure you use the var attribute in debug module and not the msg.

jinja2 date format

The output will be ok: [ Note: Make sure you have not switched off the fact gathering. If you do you will get an error like below. You can use the facts with host variable set to localhost to get the time in the local system. You can use the timestamp in other ansible tasks. For example, you can use the time to create a dynamic file name which depends on the current system time of the remote machine.

You can get the timestamp of the local machine using the Ansible lookup plugins. You can format the output in the same way you would change the usual Linux date command. For example, the below task would output the date in the following format.

Ansible Tutorials. Ansible timestamp The simplest way to get the time of the remote system is using the Ansible timestamp facts. Assign timestamp filename You can use the timestamp in other ansible tasks. Ansible Tutorial. Working with Ansible loop.Knowing date and timestamp comes handy in many tasks involving automation.

We can use these for logging purposes, include in the names of output files, and directories. We can even decide if the task should execute at all based on the current timestamp.

Formatting Dates and Time

There are a number of ways in which we can retrieve the values for the current date and timestamp. For example, we can take advantage of the facts that Ansible gathers at the beginning of each playbook.

In other words Ansible gives us a number of useful formats that we can use in our tasks, saving us from having to manually manipulate timestamps. There are times when we don't want to use Ansible's fact gathering abilities.

Perhaps it would take too long to gather facts if we are running our playbook against hundreds of hosts. Whatever the reason, we can instead opt to use "shell" module, and retrieve the timestamp from the underlying OS.

jinja2 date format

The below playbook shows how we could retrieve date and time, including nanoseconds, from the OS, and assign it to variables:. These are just two possible ways of using date and timestamp in your playbooks. I'm sure there are others, but this should be enough to cover most of your needs.

jinja2 date format

Home About RSS. Below is the playbook using that fact: get-timestamp-fact.

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System data and timestamp There are times when we don't want to use Ansible's fact gathering abilities. The below playbook shows how we could retrieve date and time, including nanoseconds, from the OS, and assign it to variables: get-timestamp-os.


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