lxml v.4.9
cssselect.py:CSSSelector.__init__ calls on `etree.XPath.__init__(self, path, namespaces=namespaces)` to initialize the parent class.
Is there a reason why `super()` or even `super(CSSSelector, self)__init__...` is not used?
I bring this up as if I attempt to monkey patch (private project) `etree.XPath.__init__` the current code causes an error
```
TypeError: super(type, obj): obj must be an instance or subtype of type
```
while replacing it with the suggested use of `super()` fixes my error.