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@@ -66,7 +66,7 b' class CallbackDispatcher(LoggingConfigurable):' | |||||
66 | # (Un)Register the callback. |
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66 | # (Un)Register the callback. | |
67 | if remove and callback in callback_list: |
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67 | if remove and callback in callback_list: | |
68 | callback_list.remove(callback) |
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68 | callback_list.remove(callback) | |
69 |
el |
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69 | elif not remove and callback not in callback_list: | |
70 | callback_list.append(callback) |
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70 | callback_list.append(callback) | |
71 |
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71 | |||
72 | def _validate_nargs(self, nargs): |
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72 | def _validate_nargs(self, nargs): |
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