Library to generate HTML from classes.
Basic usage:
>>> from htmlgen import Division, Span
>>> Division("This is ", Span("important!"), "!")
A more verbose example:
>>> span = Span("important")
>>> span.add_css_classes("important")
>>> div = Division()
>>> div.id = "my-block"
>>> div.append("This is ")
>>> div.append(span)
>>> div.append("!")
A tree constructed like this can be converted to a string:
>>> str(div)
'<div id="my-block">This is <span class="important">important</span>!</div>'
>>> "<p>This is {}!</p>".format(span)
'<p>This is <span class="important">important</span>!</p>'
Alternatively, all elements can be used as iterators, for example to return them from a WSGI callback:
>>> def application(env, start_response):
... start_response("200 OK", [("Content-Type", "text/html")])
... return div
There are two different ways to render children of HTML elements. The tree construction approach shown above is mainly suitable for elements with few children. The disadvantage of this approach is that the whole tree must be constructed in memory. An alternative way, best suited for custom sub-classes of elements, is to override the generate_children method of the Element class:
>>> class MyBlock(Division):
... def __init__(self):
... super(MyBlock, self).__init__()
... self.id = "my-block"
... def generate_children(self):
... yield "This is "
... span = Span("important")
... span.add_css_classes("important")
... yield span
... yield "!"
>>> str(MyBlock())
'<div id="my-block">This is <span class="important">important</span>!</div>'