wangweimin 7a90b90612 doc: fix mistakes and add content 4 anni fa
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__init__.py 7a90b90612 doc: fix mistakes and add content 4 anni fa
base.py 961ab07db0 maint: output error traceback to frontend's console 4 anni fa
coroutinebased.py 7a90b90612 doc: fix mistakes and add content 4 anni fa
threadbased.py fb12167fa6 maint: reformat code 4 anni fa