The YDK-Py Vagrant sandbox is now updated with YDK 0.8.1:
$ pip list | grep ydk
ydk 0.8.1
ydk-models-cisco-ios-xe 16.9.1
ydk-models-cisco-ios-xr 6.5.1.post1
ydk-models-cisco-nx-os 9.2.2
ydk-models-ietf 0.1.5.post2
ydk-models-openconfig 0.1.6.post1
ydk-service-gnmi 0.4.0.post1
$
$ pip3 list | grep ydk
ydk 0.8.1
ydk-models-cisco-ios-xe 16.9.1
ydk-models-cisco-ios-xr 6.5.1.post1
ydk-models-cisco-nx-os 9.2.2
ydk-models-ietf 0.1.5.post2
ydk-models-openconfig 0.1.6.post1
ydk-service-gnmi 0.4.0.post1
$
See the README in the ydk-py-samples repo for some basic instructions on how to instantiate the sandbox and use it to run the hundreds of Cisco IOS XR/XE/NX-OS, OpenConfig and IETF sample apps. If you're new to Vagrant, you may want to go through the Vagrant tutorial by the Vagrant team.
If you prefer to use docker, take a look at the YDK containers on Docker Hub.
Enjoy!