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Learning Flask: Part 3: Templates

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[开发(python) 所属分类 开发(python) | 发布者 店小二04 | 时间 2019 | 作者 红领巾 ] 0人收藏点击收藏
Learning Flask Installing and Using Routes Templates Errors

Flask is a microframework for server-side web development in python.

Templates

Flask uses the template engine Jinja2 internally. This allows for Flask to respond to routes with template files.

Template functionality works through using two curly brackets to open and two to close for variable interpolation (expressions). Jinja2 also supports multiple types of usages.

{%...%} : S tatements {{...}} : Expressions {#...#} : Comments #...## :Line Statements

Note:Consult theJinja2 guide for more details.

render_template()

Through working with Jinja2, Flask uses the render_template() function to select a specific file and add variables to be rendered along with it.


Learning Flask: Part 3: Templates

The first parameter to the render_template() is the file (in a folder labelled “templates” in the root directory) and the second is any variables (in a Dictionary) to be sent along.

The render_template() function returns the contents of the file given to it as filtered through its rendering system. This can be extremely useful when combined with Jinja2’s templates to build out from a ‘base’ to its children files.

Play with the example on Repl.it!

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