Per the language summit, the optional fastpath imports should use from-import-star.

Lib/bisect.py

@@ -87,6 +87,6 @@ def bisect_left(a, x, lo=0, hi=None):
 
 # Overwrite above definitions with a fast C implementation
 try:
-    from _bisect import bisect_right, bisect_left, insort_left, insort_right, insort, bisect
+    from _bisect import *
 except ImportError:
     pass