Instead of relative imports, use (implicitly) absolute ones.

Lib/distutils/sysconfig.py

@@ -16,7 +16,7 @@ import re
 import string
 import sys
 
-from .errors import DistutilsPlatformError
+from distutils.errors import DistutilsPlatformError
 
 # These are needed in a couple of spots, so just compute them once.
 PREFIX = os.path.normpath(sys.prefix)

Lib/encodings/__init__.py

@@ -29,7 +29,7 @@ Written by Marc-Andre Lemburg (mal@lemburg.com).
 """#"
 
 import codecs, types
-from . import aliases
+from encodings import aliases
 
 _cache = {}
 _unknown = '--unknown--'