Modified IndefiniteList as subclass of UserList.

[bhatt-deep]

To facilitate different list functionalities like append, pop, extend etc. in IndefiniteList, have implemented the IndefiniteList as a subclass of UserList from collections.

[cffls]

Thanks! It is a great idea to use UserList. The code looks good to me. There are some errors in static type check. Once those are fixed, this PR should be good to go.

[bhatt-deep]

@cffls I have updated the value.data to value. Then I was looking at the static types, The error is due to None type in Initlist of init method in UserList and we provide the Primitive types in the method while we call IndefiniteList,
But need some suggestions on how to deal with this.
attaching the relevant code parts here.

class UserList(_collections_abc.MutableSequence):
   A more or less complete user-defined wrapper around list objects.

   def __init__(self, initlist=None):
       self.data = []
       if initlist is not None:
           # XXX should this accept an arbitrary sequence?
           if type(initlist) == type(self.data):
               self.data[:] = initlist
           elif isinstance(initlist, UserList):
               self.data[:] = initlist.data[:]
           else:
               self.data = list(initlist)

and https://github.com/Python-Cardano/pycardano/blob/main/pycardano/serialization.py#L422-L427

[cffls]

@cffls I have updated the value.data to value. Then I was looking at the static types, The error is due to None type in Initlist of init method in UserList and we provide the Primitive types in the method while we call IndefiniteList, But need some suggestions on how to deal with this. attaching the relevant code parts here.

class UserList(_collections_abc.MutableSequence):
   A more or less complete user-defined wrapper around list objects.

   def __init__(self, initlist=None):
       self.data = []
       if initlist is not None:
           # XXX should this accept an arbitrary sequence?
           if type(initlist) == type(self.data):
               self.data[:] = initlist
           elif isinstance(initlist, UserList):
               self.data[:] = initlist.data[:]
           else:
               self.data = list(initlist)

and https://github.com/Python-Cardano/pycardano/blob/main/pycardano/serialization.py#L422-L427

I guess the problem is that UserList is not using typehint. Maybe try creating a init method for IndefiniteList and ignore the type check when passing the value.

class IndefiniteList(UserList):
    
    def __init__(list: List[Primitive]): # type: ignore
        super().__init__(list)