Fix most trivially-findable print statements.

There's one major and one minor category still unfixed:
doctests are the major category (and I hope to be able to augment the
refactoring tool to refactor bona fide doctests soon);
other code generating print statements in strings is the minor category.

(Oh, and I don't know if the compiler package works.)

Lib/test/test_operator.py

@@ -468,7 +468,7 @@ def test_main(verbose=None):
             test_support.run_unittest(*test_classes)
             gc.collect()
             counts[i] = sys.gettotalrefcount()
-        print counts
+        print(counts)
 
 if __name__ == "__main__":
     test_main(verbose=True)