feat: re-add removed variables

These are used in fetch.py.

Were removed in 267fd1c but the
fetch.py code has not yet been updated to work without these.

Should also fix pypi#48

Author: sanjayankur31

stdlib_list/__init__.py

@@ -5,6 +5,8 @@
 
 # Import all the things that used to be in here for backwards-compatibility reasons
 from .base import (
+    base_dir,
+    list_dir,
     stdlib_list,
     in_stdlib,
     get_canonical_version,

stdlib_list/base.py

@@ -10,10 +10,12 @@
     from functools32 import lru_cache
 
 long_versions = ["2.6.9", "2.7.9", "3.2.6", "3.3.6", "3.4.3", "3.5", "3.6",
-                 "3.7", "3.8", "3.9"]
+                 "3.7", "3.8", "3.9", "3.10"]
 
 short_versions = [".".join(x.split(".")[:2]) for x in long_versions]
 
+base_dir = os.path.dirname(os.path.realpath(__file__))
+list_dir = os.path.join(base_dir, "lists")
 
 def get_canonical_version(version):