Use tuple style of exec to make archive 2/3 compatible

Change *.iteritems() to list(*.items())

apa

@@ -163,10 +163,7 @@ class Importer:
         BAD = None
         try:
             code = compile(src, "%s/%s" % (self.path, filename), 'exec')
-            if sys.version_info < (3,):
-                exec("exec code in mod.__dict__")
-            else:
-                exec(code, mod.__dict__)
+            exec(code, mod.__dict__)
         except SystemExit as e:
             # Silently propagate exit
             raise e
@@ -197,7 +194,7 @@ def extract(dest='.'):
     \"\"\"Extracts archived files in dest directory ('.' is default)\"\"\"
     import os
     import os.path
-    for (m, (f, c)) in code.iteritems():
+    for (m, (f, c)) in list(code.items()):
         filepath = '%s/%s' % (dest, f)
         dirpath = os.path.dirname(filepath)
         if os.path.exists(filepath):