Change "NoneType" to "None". Add missing imports.

python2/zlib.py

@@ -3,14 +3,16 @@
 # for a more percise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
+from typing import List, Tuple, Dict, Undefined, GenericType
+
 def adler32(a, *args, **kwargs) -> int: pass
 
 def compress(a, *args, **kwargs) -> str:
     raise MemoryError()
 
 def compressobj(*args, **kwargs) -> object:
-    raise ValueError()
     raise MemoryError()
+    raise ValueError()
 
 def crc32(a, *args, **kwargs) -> int: pass
 
@@ -18,8 +20,8 @@ def decompress(a, *args, **kwargs) -> str:
     raise MemoryError()
 
 def decompressobj(*args, **kwargs) -> object:
-    raise ValueError()
     raise MemoryError()
+    raise ValueError()
 
 
 class Compress(object):