> The interpreter, though, will be more than happy to treat that as a > comparison if the LHS is not the type that you think it is. For > example, maybe you've added it to a string at some point, and now it's > a string instead of an element. I guess that since doc is made a > keyword, that probably couldn't happen in this example, but it could > happen when trying to add child nodes to other nodes.
Unsurprisingly, the translation engine in Brython transforms x <= y into x.__le__(y) If x is a string, then __le__ means of course "lesser or equal" so y can only be a string, otherwise an exception is raised ; this is similar to trying to add a child node to a text node in the DOM > By the way, what is Brython actually doing when you append a child to > the document itself like that? Usually I would expect a div to be > appended to the body or to another div. The above looks like it would > attach the new div as a sibling of the html element. Or is it just > calling document.write()? dom_elt <= obj actually adds one or several DOM nodes (it depends of the class of obj) to the DOM node represented by dom_elt. It's difficult to explain all the cases here, you would have to take a look at the code in py_dom.js, but <= and + work on the DOM tree, there is no document.write anywhere -- http://mail.python.org/mailman/listinfo/python-list
