AttributeError: module 'pyarrow' has no attribute 'PyExtensionType' during import 
Yes colab doesn’t reload preloaded library unless you restart the instance. Maybe we should move the check on top of the init 
I'm using Colab. And suddenly this morning, there is this error. Have a look below!

![screenshot-colab research google com-2021 01 26-08-15-36](https://user-images.githubusercontent.com/45964869/105799890-fdaf3b80-5fae-11eb-8f06-11b65cdccc30.png)

AttributeError: module 'pyarrow' has no attribute 'PyExtensionType' during import  
 I'm using Colab. And suddenly this morning, there is this error. Have a look below!

![screenshot-colab research google com-2021 01 26-08-15-36](https://user-images.githubusercontent.com/45964869/105799890-fdaf3b80-5fae-11eb-8f06-11b65cdccc30.png)
 
 Yes colab doesn’t reload preloaded library unless you restart the instance. Maybe we should move the check on top of the init 