Implement a function, with calling syntax max(L), that returns the maximum element from a PositionalList instance L containing comparable elements.   Redo the previously problem with max as a method...

Implement a function, with calling syntax max(L), that returns the maximum

element from a PositionalList instance L containing comparable

elements.

Redo the previously problem with max as a method of the PositionalList

class, so that calling syntax L.max( ) is supported.

Update the PositionalList class to support an additional method find(e),

which returns the position of the (first occurrence of ) element
e
in the list

(or None if not found).