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What is render template in Python?
render_template is a Flask function from the flask. templating package. render_template is used to generate output from a template file based on the Jinja2 engine that is found in the application’s templates folder. Note that render_template is typically imported directly from the flask package instead of from flask.
How do I use Python templates?
The Python string Template is created by passing the template string to its constructor. It supports $-based substitutions. This class has 2 key methods: substitute(mapping, **kwds): This method performs substitutions using a dictionary with a process similar to key-based mapping objects.
How do you render a template in flask?
Flask provides a function called render_template () for rendering Templates. It is this function which integrates Jinja with Flask. To render a template we call render_template () with the template name along with the data you want to pass to the template as keyword arguments.
What does the function render ( ) do in HTML?
The render_template () function renders the template and returns HTML as a string. The keyword arguments we pass to the template is known as the context of the template or simply template context. The following listing shows how to render index.html template using the render_template () (changes are highlighted).
How are templates used in a view function?
Rather than having large blocks of HTML strings embedded in view functions (which would be terrible to maintain), we use Templates. A template is just a text file which contains static HTML code as well as some special markup denoting dynamic content that will be known at the time of the request.
How to create a template object in Python?
For testing purpose rendering templates inside the console is quite easy, rather than creating several files. Start the Python shell and import Template class from the jinja2 package as follows. To create a Template object simply pass the content of the template as a raw string.