flake8 fixes

course/page/code.py

@@ -284,7 +284,7 @@ def check_timeout():
         while True:
             try:
                 connection = http_client.HTTPConnection(connect_host_ip, port)
-                print('attempting connection',connect_host_ip,port)
+                print("attempting connection", connect_host_ip, port)
 
                 connection.request("GET", "/ping")  # XXX here's the trouble
 
@@ -722,13 +722,16 @@ def get_test_code(self):
         if correct_code is None:
             correct_code = ""
 
-        from .code_run_backend_py \
-            import substitute_correct_code_into_test_code
+
 
         if self.page_desc.type in [
                 "OctaveCodeQuestion"]:
             from .code_run_backend_octave \
                 import substitute_correct_code_into_test_code
+        else:
+            from .code_run_backend_py \
+                import substitute_correct_code_into_test_code
+
         return substitute_correct_code_into_test_code(test_code, correct_code)
 
     @staticmethod

course/page/code_run_backend_octave.py

@@ -219,19 +219,19 @@ def output_html(s):
         result["result"] = "success"
         return
 
-    '''
+    """
     user_ctx = {}
     if hasattr(run_req, "names_for_user"):  #XXX unused for Octave context currently
         for name in run_req.names_for_user:
             if name not in maint_ctx:
                 result["result"] = "setup_error"
-                result["message"] = "Setup code did not define '%s'." % name
+                result["message"] = "Setup code did not define \'%s\'." % name
 
             user_ctx[name] = maint_ctx[name]
 
     from copy import deepcopy
     user_ctx = deepcopy(user_ctx)
-    '''
+    """
 
     try:
         #user_ctx["_MODULE_SOURCE_CODE"] = run_req.user_code