--- bindings/xpcom/python/xpcom/vboxxpcom.py	2016-09-12 17:32:29.000000000 +0200
+++ /usr/lib/virtualbox/sdk/bindings/xpcom/python/xpcom/vboxxpcom.py	2017-07-13 12:11:50.309907961 +0200
@@ -39,7 +39,7 @@
 if sys.hexversion >= 0x030200f0 and sys.abiflags:
     _asNew = []
     for sCandidate in _asVBoxPythons:
-        if isdigit(sCandidate[-1:]):
+        if sCandidate[-1:].isdigit():
             _asNew.append(sCandidate + sys.abiflags)
         else:
             _asNew.append(sCandidate)