>>> import albatross
>>> ctx = albatross.SimpleContext('.')
>>> ctx.locals.sel1 = 3
>>> ctx.locals.sel2 = (2,3)
>>> albatross.Template(ctx, '<magic>', '''
... <al-select name="sel1" optionexpr="range(5)" whitespace/>
... <al-select name="sel2" optionexpr="range(5)" multiple whitespace/>
... ''').to_html(ctx)
>>> ctx.flush_content()
<select name="sel1"><option>0</option>
<option>1</option>
<option>2</option>
<option selected>3</option>
<option>4</option>
</select>
<select multiple name="sel2"><option>0</option>
<option>1</option>
<option selected>2</option>
<option selected>3</option>
<option>4</option>
</select>
