Compatibility issues

[kysunami]

Getting following errors:
AttributeError: module 'torch.nn' has no attribute 'Identity' for old versions like PyTorch 0.4.1
AttributeError: 'torch.dtype' object has no attribute 'type' for latest versions like PyTorch 1.1.0

AttributeError: module 'torch.nn' has no attribute 'Identity' - It was added in PyTorch 1.1.0 so the solution is to upgrade to the latest version huggingface/transformers#869

AttributeError: 'torch.dtype' object has no attribute 'type' downgrading to PyTorch 0.4.1 makes it work. facebookresearch/MUSE#101

Facing compatibility issues.. How to use both in a single piece of code??