<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><br>where we use types?<br>    almost:<br>        isinstance(obj, T);<br>        # issubclass(S, T);<br><br>Note that TYPE is SET;<br>    if we add __contains__ and __le__ into "type",<br>    then things become:<br>        obj in T;<br>        # S <= T;  # if only not misleading to a total ordering<br><br>example:<br>    def __getitems__(self, i):<br>        if i in Integral:<br>            ...<br>        elif i in slice:<br>            ...<br><br># Save "(,)". Really, I prefer to type "lambda:;" than "()".<br># I fail to modify the "type" object, since it is a C-object.<span id="transmark" style="display: none; width: 0px; height: 0px;"></span><br><br><br></div><br><br><span title="neteasefooter"><p> </p></span>