avoid deprecated imp.get_suffixes on >= 3.3

1 files changed, 12 insertions, 6 deletions

diff --git a/cffi/verifier.py b/cffi/verifier.py
index 9603a7e..d575a25 100644
--- a/cffi/verifier.py
+++ b/cffi/verifier.py
@@ -1,7 +1,17 @@
-import sys, os, binascii, imp, shutil
+import sys, os, binascii, shutil
 from . import __version__
 from . import ffiplatform
 
+if sys.version_info >= (3, 3):
+    import importlib.machinery
+    def extension_suffixes():
+        return importlib.machinery.EXTENSION_SUFFIXES[:]
+else:
+    import imp
+    def extension_suffixes():
+        return [suffix for suffix, _, type in imp.get_suffixes()
+                if type == imp.C_EXTENSION]
+
 
 class Verifier(object):
 
@@ -222,11 +232,7 @@ def cleanup_tmpdir(tmpdir=None, keep_so=False):
             pass
 
 def _get_so_suffixes():
-    suffixes = []
-    for suffix, mode, type in imp.get_suffixes():
-        if type == imp.C_EXTENSION:
-            suffixes.append(suffix)
-
+    suffixes = extension_suffixes()
     if not suffixes:
         # bah, no C_EXTENSION available.  Occurs on pypy without cpyext
         if sys.platform == 'win32':