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A beautiful python syntax to generate HTML.

Project description

Syntags: Write your markup in Python, easily

Features  •  Install  •  License  •  Docs

Syntags lets you generate HTML, XML, SVG, etc. by writing concise, real Python code.

Syntags was built from the ground up for readable code. First-class support for components, custom elements, and fragments is baked into the design.

Syntags takes a different approach to Pyxl — taking Python's own syntax and repurposing it, rather than using a custom character encoding and transforming your invalid code into valid code.

  • The code you write is real Python, no magic.
  • You don't need to learn the quirks of a new syntax.
  • It's easy to get started with and integrate into your code.
  • Highlighting works, and your linter will only be slightly angry.

A brief note on the syntax ~

PEP 8 isn't gospel. Creating a beautiful syntax means ignoring certain parts of it, and that's okay! The second section, "A Foolish Consistency is the Hobgoblin of Little Minds," even summarises this.

View a relevant excerpt

. . . know when to be inconsistent -- sometimes style guide recommendations just aren't applicable. When in doubt, use your best judgment. Look at other examples and decide what looks best.

Some other good reasons to ignore a particular guideline:

  1. When applying the guideline would make the code less readable, even for someone who is used to reading code that follows this PEP.

  2. . . .

Check out the Syntags styleguide for recommendations on how to maintain good code quality.

Features

an expressive syntax that makes sense

Structured like a programming language, because it is one. No context switching between templating and programming.

import syntags as tags
from syntags.html import *

app = html (lang="en") [
  head [
    title ["Some basic markup"]
  ],
  body [
    main [
      ...  # etc...
    ]
  ]
]

rendered = tags.render(app)

intuitive syntax shorthands

It's effortless to write compact code that's easy to read and maintain.

body [
  div .main_wrapper / main [
    ...
  ]
]

# The same, but without the shorthand:
body [
  div (classes={"main-wrapper"}) [
    main [
      ...
    ]
  ]
]

reusable, declarative components

Similar to React, but very much Python.

import syntags as tags
from syntags.html import *

@tags.component
def hello_message(name, **attrs):
  return div [
    f"Hello {name}"
  ]


rv = tags.render(hello_message (name="world"))
View the React JSX equivalent
import React from "react";
import ReactDOMServer from "react-dom/server";

function HelloMessage({ name, ...props }) {
  return (
    <div>
      Hello {name}
    </div>
  );
}


rv = ReactDOMServer.renderToStaticMarkup(<HelloMessage name="world" />)

Keep in mind, this is in JSX. Compiling it is yet another step. Syntags' syntax is pure Python, no intermediate steps required.

first-class fragments, no wizardry required

Fragments are just a sequence of elements, and they can be nested infinitely.

HEAD_DATA = [
  link (rel="canonical", href="https://rob.ac/"),
  link (rel="stylesheet", href="dist/css/layout.css"),
  link (rel="shortcut icon", href="favicon.ico", type="image/x-icon")
]

html (lang="en") [
  head [
    HEAD_DATA
  ],
  ...
]

simple, safe rendering

Everything becomes a string and gets escaped, except for raw strings.

import syntags as tags
from syntags.html import *

rendered = tags.render(
  html (lang="en") [
    tags.raw("""
    <head>
      <title>A good example</title>
      <meta charset="UTF-8">
    </head>
    """),
    body [
      p [
        "<b>This will get escaped</b>"
      ]
    ]
  ]
)

more than just HTML

Syntags comes with a bunch of namespaces to make your life easy.

  • HTML tags: html
  • XML prolog and tag factory: xml
  • Some predefined XML namespaces: svg, rss, sitemap
  • Common, useful components: ext

Install

You can use Pip, or anything that can install from PyPI, such as Poetry or Pipenv.

$ pip install syntags
+ Markdown component (syntags.ext.markdown)
$ pip install syntags[markdown]

License

Syntags is licensed under the ISC license, a simplified version of the MIT license. You can modify this project and use it in whatever you want! The only condition for redistribution is that you must include a copy of the license.

There's a copy in syntags/__init__.py, so you'll be fine as long as you don't remove that! Otherwise, you can include the copy found in the root of the repository.

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