def lpos(
        self,
        name: KeyT,
        value: EncodableT,
        rank: Optional[int] = None,
        count: Optional[int] = None,
        maxlen: Optional[int] = None,
    ) -> Awaitable:
        """
        Get position of ``value`` within the list ``name``

         If specified, ``rank`` indicates the "rank" of the first element to
         return in case there are multiple copies of ``value`` in the list.
         By default, LPOS returns the position of the first occurrence of
         ``value`` in the list. When ``rank`` 2, LPOS returns the position of
         the second ``value`` in the list. If ``rank`` is negative, LPOS
         searches the list in reverse. For example, -1 would return the
         position of the last occurrence of ``value`` and -2 would return the
         position of the next to last occurrence of ``value``.

         If specified, ``count`` indicates that LPOS should return a list of
         up to ``count`` positions. A ``count`` of 2 would return a list of
         up to 2 positions. A ``count`` of 0 returns a list of all positions
         matching ``value``. When ``count`` is specified and but ``value``
         does not exist in the list, an empty list is returned.

         If specified, ``maxlen`` indicates the maximum number of list
         elements to scan. A ``maxlen`` of 1000 will only return the
         position(s) of items within the first 1000 entries in the list.
         A ``maxlen`` of 0 (the default) will scan the entire list.
        """
        pieces: List[EncodableT] = [name, value]
        if rank is not None:
            pieces.extend(["RANK", rank])

        if count is not None:
            pieces.extend(["COUNT", count])

        if maxlen is not None:
            pieces.extend(["MAXLEN", maxlen])

        return self.execute_command("LPOS", *pieces)

        Get position of ``value`` within the list ``name``

         If specified, ``rank`` indicates the "rank" of the first element to
         return in case there are multiple copies of ``value`` in the list.
         By default, LPOS returns the position of the first occurrence of
         ``value`` in the list. When ``rank`` 2, LPOS returns the position of
         the second ``value`` in the list. If ``rank`` is negative, LPOS
         searches the list in reverse. For example, -1 would return the
         position of the last occurrence of ``value`` and -2 would return the
         position of the next to last occurrence of ``value``.

         If specified, ``count`` indicates that LPOS should return a list of
         up to ``count`` positions. A ``count`` of 2 would return a list of
         up to 2 positions. A ``count`` of 0 returns a list of all positions
         matching ``value``. When ``count`` is specified and but ``value``
         does not exist in the list, an empty list is returned.

         If specified, ``maxlen`` indicates the maximum number of list
         elements to scan. A ``maxlen`` of 1000 will only return the
         position(s) of items within the first 1000 entries in the list.
         A ``maxlen`` of 0 (the default) will scan the entire list.
        
aioredis/client.py