Name initialization should always take the same param types as input

jedi/evaluate/imports.py

@@ -167,7 +167,8 @@ class ImportPath(pr.Base):
         # This is not an existing Import statement. Therefore, set position to
         # 0 (0 is not a valid line number).
         zero = (0, 0)
-        names = i.namespace.names[1:]
+        names = ((name_part.string, name_part.start_pos)
+                 for name_part in i.namespace.names[1:])
         n = pr.Name(i._sub_module, names, zero, zero, self.import_stmt)
         new = pr.Import(i._sub_module, zero, zero, n)
         new.parent = parent

jedi/parser/representation.py

@@ -1433,8 +1433,7 @@ class Name(Simple):
 
     def __init__(self, module, names, start_pos, end_pos, parent=None):
         super(Name, self).__init__(module, start_pos, end_pos)
-        names = tuple(n if isinstance(n, NamePart) else
-                      NamePart(n[0], self, n[1]) for n in names)
+        names = tuple(NamePart(n[0], self, n[1]) for n in names)
         # Cache get_code, because it's used quite often for comparisons
         # (seen by using the profiler).
         self._get_code = ".".join(unicode(n) for n in names)