+
-
*
/
//
%
**
+,-,*,/,//,%,**
=, +=, -=, *=, /=, //=, %=, **=
a < b
a > b
a <= b
a >= b
a == b
a != b
a < b < c
and
or
not
&
|
^
~
in
not in
比较两个对象存储单元,即是不是引用同一个对象
is
is not