This looks great! Building HTML on the server with static types and htmx is a very productive combination! At work, we have been exploring alternatives to templates in our Django project and just released it as a lib to help with this: https://htpy.dev/
Whoa, a creative (in a good way IMO) use of __ getitem__() dunder method to depict attributes and children. No action at a distance using with blocks, static and strongly typing instead of stringly typing, no need to extend Python, composable from fragments. Have you tried to "bring up front" if and for? For example > if_(cond, tag1(), tag2()) # without eagerly execute both branches Instead of > tag1() if cond else t…
htpy supports generators/callables as children (https://htpy.dev/streaming/). As long as you are careful to wrap things in generators/lambdas everything is lazy. Implementing if_ and for_ is straightforward and anyone can build constructs like that to use. But will not be lazy unless all arguments are wrapped in lambdas:
from htpy import div, li, ul
def if_(cond, a, b):
return a() if cond() else b()
def for_(items, func):
return (func(item) for item in items())
print(div[if_(lambda: True, lambda: "True!", lambda: "False!")])
print(div[if_(lambda: False, lambda: "True!", lambda: "False!")])
print(ul[for_(lambda: ["a", "b", "c"], lambda x: li[x])])
True!
False!
abc