jupyter notebook : generator_to_async_generator

真是日了狗了，conda下新环境安装jupyter notebook，从没有像今天不顺

ImportError: cannot import name 'generator_to_async_generator'

解决

pip install -U prompt-toolkit==1.0.15

 attributeerror module 'dateutil.tz' has no attribute 'utc'

解决，放弃最新版本

pip install python-dateutil==2.7.0