zstd: replace star import with explicit names

Author: AA-Turner

Lib/compression/zstd/__init__.py

@@ -28,7 +28,8 @@
 
 import _zstd
 import enum
-from _zstd import *
+from _zstd import (get_frame_size, zstd_version, zstd_version_info,
+                   ZstdCompressor, ZstdDecompressor, ZstdDict, ZstdError)
 from compression.zstd._zstdfile import ZstdFile, open, _nbytes
 
 COMPRESSION_LEVEL_DEFAULT = _zstd._compressionLevel_values[0]