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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def remove(self, key, where=None, start=None, stop=None):
 """ Remove pandas object partially by specifying the where condition Parameters key : string Node to remove or delete rows from where : list of Term (or convertible) objects, optional start : integer (defaults to None), row number to start selection stop : integer (defaults to None), row number to stop selection Returns ------- number of rows removed (or None if not a Table) Exceptions raises KeyError if key is not a valid store """

        where = _ensure_term(where, scope_level=1)
        try:
            s = self.get_storer(key)
        except KeyError:
            # the key is not a valid store, re-raising KeyError
            raise
        except Exception:

            if where is not None:
                raise ValueError(
                    "trying to remove a node with a non-None where clause!")

            # we are actually trying to remove a node (with children)
            s = self.get_node(key)
            if s is not None:
                s._f_remove(recursive=True)
                return None

        # remove the node
        if com._all_none(where, start, stop):
            s.group._f_remove(recursive=True)

        # delete from the table
        else:
            if not s.is_table:
                raise ValueError(
                    'can only remove with where on objects written as tables')
            return s.delete(where=where, start=start, stop=stop)