diff --git a/Tools/pybench/CommandLine.py b/Tools/pybench/CommandLine.py
index 6601be5..ddf958d 100644
--- a/Tools/pybench/CommandLine.py
+++ b/Tools/pybench/CommandLine.py
@@ -347,7 +347,7 @@
             if rc is None:
                 rc = 0
 
-        except SystemExit,rc:
+        except SystemExit as rc:
             pass
 
         except KeyboardInterrupt:
@@ -433,7 +433,7 @@
                 files = l
             self.optionlist = optlist
             self.files = files + self.files
-        except getopt.error,why:
+        except getopt.error as why:
             self.help(why)
             sys.exit(1)
 
diff --git a/Tools/pybench/pybench.py b/Tools/pybench/pybench.py
index 392ff50..e0ff732 100755
--- a/Tools/pybench/pybench.py
+++ b/Tools/pybench/pybench.py
@@ -865,7 +865,7 @@
                 bench.name = compare_to
                 f.close()
                 compare_to = bench
-            except IOError, reason:
+            except IOError as reason:
                 print '* Error opening/reading file %s: %s' % (
                     repr(compare_to),
                     reason)
@@ -885,7 +885,7 @@
                 else:
                     bench.print_benchmark(hidenoise=hidenoise,
                                           limitnames=limitnames)
-            except IOError, reason:
+            except IOError as reason:
                 print '* Error opening/reading file %s: %s' % (
                     repr(show_bench),
                     reason)
@@ -931,9 +931,9 @@
                 bench.name = reportfile
                 pickle.dump(bench,f)
                 f.close()
-            except IOError, reason:
+            except IOError as reason:
                 print '* Error opening/writing reportfile'
-            except IOError, reason:
+            except IOError as reason:
                 print '* Error opening/writing reportfile %s: %s' % (
                     reportfile,
                     reason)