Templating language

Q: How deeply does The Well-Grounded Python Developer: How the pros use Python and Flask cover templating language?

Defines placeholders, separate template files, and value substitution through a worked Flask example.

As explained in The Well-Grounded Python Developer: How the pros use Python and Flask

A template language is a language for combining a document template with data to produce a completed output document.

A templating language combines a document template with data to produce completed output. In web applications, it keeps HTML in a separate template file while inserting dynamic values before the server delivers the page. section 6.4.3

A dynamic page with Jinja2

Flask passes the current time to index.html with render_template("index.html", now=datetime.now()). The template places that value inside <h1>Current time: {{now}}</h1>, producing browser-ready HTML.

How The Well-Grounded Python Developer: How the pros use Python and Flask covers it

Cover of The Well-Grounded Python Developer: How the pros use Python and Flask

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Also explained in

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Django in ActionA template language is a language embedded in templates for replacing values, accessing data, and controlling rendered output.
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Data Pipelines with Apache Airflow, Second EditionTemplating is the technique of generating a command or other text by substituting runtime values into a predefined template.

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Related concepts

Helmused by · Helm is a Kubernetes package manager and templating tool that defines, packages, installs, upgrades, and manages applications through charts.
Jinjaincludes · Jinja is a Python templating engine that generates text by rendering templates containing static content, expressions, variables, and control structures with supplied data.
JSXincludes · JSX is a JavaScript syntax extension for expressing user-interface elements with XML-like or HTML-like markup that is transformed into JavaScript.
mockingused by · Mocking is a testing technique that replaces a real dependency with a controlled substitute to simulate behavior or inspect interactions.
string formattingused by · String formatting is the construction of text from values according to a specified format or template.

This explainer was generated by Manning's knowledge graph from the text of The Well-Grounded Python Developer: How the pros use Python and Flask. The section links point to the parts of the book it draws on.