MongoDB-update

>db.collection.update({'area':'无'},{'$set':{'area':'北京'}},multi=True)

菜鸟教程网的—
MongoDB 更新文档
有两个错误，

>db.col.update({'title':'MongoDB 教程'},{$set:{'title':'MongoDB'}},{multi:true})

显而易见，害我怀疑自己的智商。

最后，jupyter notebook Terminals Unavailable
ipython-notebook-terminals-unavailable

Windows do not support tty terminal, and terminado only works if the underlying terminal is a tty. So for now there is not support for terminals on Windows. There is no short-term plan to support terminal either.