class A(B):
    def __init__(self):
        <warning descr="Python version 2.6, 2.7 do not support this syntax. super() should have arguments in Python 2">super()</warning>

<warning descr="Python version 3.4, 3.5, 3.6, 3.7, 3.8, 3.9 do not have method cmp">cmp()</warning>
<warning descr="Python version 3.4, 3.5, 3.6, 3.7, 3.8, 3.9 do not have method reduce">reduce()</warning>

<warning descr="Python version 3.4, 3.5, 3.6, 3.7, 3.8, 3.9 do not have method buffer">buffer()</warning>