(append, element)
If |append| is None, simply return |element|. If |append| is not None,
    then add |element| to it, adding each item in |element| if it's a list or
    tuple.
If |append| is None, simply return |element|. If |append| is not None,
    then add |element| to it, adding each item in |element| if it's a list or
    tuple.
If |append| is None simply return |element| . If |append| is not None then add |element| to it adding each item in |element| if it s a list or tuple .
def _AppendOrReturn(append, element):
    """If |append| is None, simply return |element|. If |append| is not None,
    then add |element| to it, adding each item in |element| if it's a list or
    tuple."""
    if append is not None and element is not None:
        if isinstance(element, list) or isinstance(element, tuple):
            append.extend(element)
        else:
            append.append(element)
    else:
        return element
def _AppendOrReturn ( append , element ) : if append is not None and element is not None : if isinstance ( element , list ) or isinstance ( element , tuple ) : append . extend ( element ) else : append . append ( element ) else : return element