example1.py

from nagare import presentation

class Welcome(object):
    message = "Hello World!"
    

@presentation.render_for(Welcome)
def render(welcome, h, *args):
    """
    HTML fragment is associated with `Welcome` class as its default view.
    
    - `welcome`: an object of type Welcome
    - `h`: HTML renderer, it exposes HTML namespace
    """
    with h.div:
        h << h.span(welcome.message, class_='welcome-class')
        return h.root
    
app = Welcome