TEMPLATE ENGINE

SUPPORTED SYNTAX

i) Data is inserted using double dollar sign

<p>Welcome, $$user$$</p>

ii) The dot notation will be used to access object attributes, dictionary values. If the resulting value is callable, it will be automatically called.

<p>The price is: $$product.price$$. </p>

iii) Filters are also provided to modify values

<p>$$ blog.title | lower | slugify $$</p>

iv) Conditionals

$! if product.price !$
    <p> Price is: $$ product.price $$</p>
$! endif !$

v) Loops $! for product in products !$

Price is: $$$ product.price $$

$! endfor !$

vi) Comments

$# This is a simple template engine #$

EXAMPLE

from engine import Template

template = Template("""
<h1>Hello $$name|upper$$!</h1>
<h2>You have $\x01$$account$$ in your account</h2>
$# For loop #$
$! for topic in topics !$
    <p> Status: $$topic.status|upper|lower$$.</p>
    $! if topic.subject !$
        <p>You are interested in $$topic.subject$$.</p>
    $! endif !$
$! endfor !$
<h3>Thank you for your services</h3>
""", {'upper': str.upper,'lower': str.lower})

text = template.render({
    'name': "Ned",
    'account': 2.00,
    'topics': [{"subject":'', "status": lambda : repr(None)},
               {"subject":'Python', "status": "Enjoy"},
               {"subject":'Geometry', "status": "??"},
               {"subject":'Juggling', "status": "Hard"}]
})
print(text)

For more information, read template_engine.txt

Implementation gotten from A Template Engine