SF Patch #864863: Bisect C implementation

(Contributed by Dmitry Vasiliev.)

Lib/bisect.py

@@ -76,3 +76,9 @@ def bisect_left(a, x, lo=0, hi=None):
         if a[mid] < x: lo = mid+1
         else: hi = mid
     return lo
+
+# Overwrite above definitions with a fast C implementation
+try:
+    from _bisect import bisect_right, bisect_left, insort_left, insort_right, insort, bisect
+except ImportError:
+    pass