Function _required_attribute

lab/cust-elm-classes/main.py:85–90

Add attribute with default value to element if it doesn't already exist.

(element, name, default)

    return '{%s}%s' % (uri, tagroot)

def _required_attribute(element, name, default):
    """
    Add attribute with default value to element if it doesn't already exist.
    """
    if element.get(name) is None:
        element.set(name, default)

def _required_child(parent, tag):
    """